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Stainless Steel 431 (S43100)

Stainless Steel 431 (S43100)
Stainless Steel 431 (S43100)
Product Code : 365
Product Description

Stainless Steel 431 (S43100)                    

MARTENSITIC STAINLESS STEEL

Martensitic, or hardenable stainless steels, are classified in the 400 series, usually with 11.5% chromium up to 18% chromium, with higher levels of carbon than ferritics, and are capable of being heat treated to a wide range of hardness and strength levels. Commercially produced AISI grades of this class are Type 410, 410H, 420, and 420HC. Martensitic stainless steels are used extensively in cutlery, sport knives and multi-purpose tools.

Martensitic stainless steels can be high or low-carbon steels built around the Type 410 composition of iron, 12% chromium, and up to 1.2% carbon. They are usually tempered and hardened. Tempered martensite gives steel good hardness and high toughness; used largely for medical tools (scalpels, razors and internal clamps).  Untempered martensite is low in toughness and therefore brittle.

Martensitic stainless steels work in the same way as many low alloy steels. Carbon is the key element. They have a structure similar to the ferritics with a 'body-centred tetragonal' (bct) crystal lattice. Normally, when steels are heated they transform from ferrite to austenite. On slow cooling the steel transforms back to ferrite. However, with fast cooling through quenching in water, oil or sometimes even air, the carbon atoms become trapped in a somewhat distorted atomic matrix. This is known as body-centred tetragonal. The distortion of the atomic matrix leads to the hard martensitic structure. The higher the carbon level the harder is the martensite. In the as-quenched condition, martensitic steels are virtually useless as they have insufficient impact toughness.

Due to the addition of carbon, they can be hardened and strengthened by heat treatment, in a similar way to carbon steels. They are classed as a "hard" ferro-magnetic group. In the annealed condition, they have tensile yield strengths of about 275 MPa and so they are usually machined, cold formed, or cold worked in this condition. The strength obtained by heat treatment depends on the carbon content of the alloy. Increasing the carbon content increases the strength and hardness potential but decreases ductility and toughness. The higher carbon grades are capable of being heat treated to hardnesses of 60 HRC. 

Optimum corrosion resistance is attained in the heat-treated i.e. hardened and tempered condition. Martensitic grades have been developed with nitrogen and nickel additions but with lower carbon levels than the traditional grades. These steels have improved toughness, weldability and corrosion resistance.

Martensitic stainless steels, such as types 403, 410, 410NiMo and 420, are similar in composition to the ferrite group, but contain a balance of C and Ni vs. Cr and Mo; hence, austenite at high temperatures transforms to martensite at low temperatures. Like ferrite, they also have a body-centered cubic crystal structure in the hardened condition. The carbon content of these hardenable steels affects forming and welding. To obtain useful properties and prevent cracking, the weldable martensitics usually require preheating and postweld heat treatment.

MAJOR GRADES OF MARTENSITIC STAINLESS STEEL:

410- BASIC GRADE

420- HIGHER HARDNESS GRADE

431- HIGHER CORROSION RESISTANT AND TOUGHNESS GRADE

440A/B/C- INCREASING HARDNESS AFTER HEAT TREATMENT

416- WELDING CONSUMABLE GRADES


Martensitic stainless steels were the first stainless steels that were commercially developed (as cutlery) and have a relatively high carbon content (0.1 - 1.2%) compared to other stainless steels. They are plain chromium steels containing between 12 and 18% chromium. They are magnetic and hardenable by quenching and tempering like plain carbon steels and find their main application in cutlery, aerospace and general engineering.

A relatively new group of martensitic stainless steels are the supermartensitic stainless steels. The supermartensitic grades combine high strength and low-temperature toughness with acceptable corrosion resistance in many applications.


Martensitic Stainless Applications

Martensitic stainless steel are typically used for:

  • Knife blades

  • Cutlery

  • Surgical instruments

  • Fasteners

  • Shafts

  • Springs



MARTENSITIC STAINLESS STEELS

TYPE

Equivalent UNS

403

S40300

410

S41000

414

S41400

416

S41600

416Se

S41623

420

S42000

420F

S42020

422

S42200

431

S43100

440A

S44002

440B

S44003

440C

S44004


Chemical composition of stainless steel

Classification

Specification

Chemical Composition

other

JIS

AISI

C

Si

Mn

P

S

Ni

Cr

Mo

Cu

N


Martensitic Grades

SUS403

403

Max.0.15

Max.0.50

Max.1.00

Max.0.040

Max.0.030

(1)

11.50~13.00

-

-

-

-

SUS410

410

Max.0.15

Max.1.00

Max.1.00

Max.0.040

Max.0.030

(1)

11.50~13.50

-

-

-

-

SUS410J1

-

0.08~0.18

Max.0.60

Max.1.00

Max.0.040

Max.0.030

(1)

11.50~14.00

0.30~0.60

-

-

-

SUS410F2

-

Max.0.15

Max.1.00

Max.1.00

Max.0.040

Max.0.030

(1)

11.50~13.50

-

-

-

Pb 0.05˜0.30

SUS416

416

Max.0.15

Max.1.00

Max.1.25

Max.0.060

Min.0.15

(1)

12.00~14.00

(2)

-

-

-

SUS420J1

420

0.16~0.25

Max.1.00

Max.1.00

Max.0.040

Max.0.030

(1)

12.00~14.00

-

-

-

-

SUS420J2

420

0.26~0.40

Max.1.00

Max.1.00

Max.0.040

Max.0.030

(1)

12.00~14.00

-

-

-

-

SUS420F

420F

0.26~0.40

Max.1.00

Max.1.25

Max.0.060

Min.0.15

(1)

12.00~14.00

(2)

-

-

-

SUS420F2

-

0.26~0.40

Max.1.00

Max.1.00

Max.0.040

Max.0.030

(1)

12.00~14.00

-

-

-

Pb 0.05~0.30

SUS431

431

Max.0.20

Max.1.00

Max.1.00

Max.0.040

Max.0.030

1.25~2.50

15.00~17.00

-

-

-

-

SUS440A

440A

0.60~0.75

Max.1.00

Max.1.00

Max.0.040

Max.0.030

(1)

16.00~18.00

(3)

-

-

-

SUS440B

440B

0.75~0.95

Max.1.00

Max.1.00

Max.0.040

Max.0.030

(1)

16.00~18.00

(3)

-

-

-

SUS440C

440C

0.95~1.20

Max.1.00

Max.1.00

Max.0.040

Max.0.030

(1)

16.00~18.00

(3)

-

-

-

SUS440F

S44020

0.95~1.20

Max.1.00

Max.1.25

Max.0.060

Min.0.15

(1)

16.00~18.00

(3)

-

-

-

Ferritic Grades

SUS405

405

Max.0.08

Max.1.00

Max.1.00

Max.0.040

Max.0.030

-

11.50~14.50

-

-

-

Al 0.10~0.30

SUS410L

-

Max.0.03

Max.1.00

Max.1.00

Max.0.040

Max.0.030

-

11.00~13.50

-

-

-

-

SUS430

430

Max.0.12

Max.0.75

Max.1.00

Max.0.040

Max.0.030

-

16.00~18.00

-

-

-

-

SUS430F

430F

Max.0.12

Max.1.00

Max.1.25

Max.0.060

Min.0.15

-

16.00~18.00

(2)

-

-

-

SUS434

434

Max.0.12

Max.1.00

Max.1.00

Max.0.040

Max.0.030

-

16.00~18.00

0.75~1.25

-

-

-

SUS447J1

-

Max.0.01

Max.0.40

Max.0.40

Max.0.030

Max.0.020

-

28.50~32.00

1.50~2.50

-

Max.0.015

-

SUSXM27

-

Max.0.01

Max.0.40

Max.0.40

Max.0.030

Max.0.020

-

25.00~27.50

0.75~1.50

-

Max.0.015

-

Austenitic Ferritic Grades

SUS329J1

329

Max.0.08

Max.1.00

Max.1.50

Max.0.040

Max.0.030

3.00~6.00

23.00~28.00

1.00~3.00

-

-

-

SUS329J3L

S31803

Max.0.03

Max.1.00

Max.2.00

Max.0.040

Max.0.030

4.50~6.50

21.00~24.00

2.50~3.50

-

0.08~0.20

-

SUS329J4L

S31260

Max.0.03

Max.1.00

Max.1.50

Max.0.040

Max.0.030

5.50~7.50

24.00~26.00

2.50~3.50

-

0.08~0.30

-

Austenitic Grades

SUS201

201

Max.0.15

Max.1.00

5.50~7.50

Max.0.060

Max.0.030

3.50~5.50

16.00~18.00

-

-

0.25??

-

SUS202

202

Max.0.15

Max.1.00

7.50~10.00

Max.0.060

Max.0.030

4.00~6.00

17.00~19.00

-

-

Max.0.25

-

SUS301

301

Max.0.15

Max.1.00

Max.2.00

Max.0.045

Max.0.030

6.00~8.00

16.00~18.00

-

-

-

-

SUS302

302

Max.0.15

Max.1.00

Max.2.00

Max.0.045

Max.0.030

8.00~10.00

17.00~19.00

-

-

-

-

SUS303

303

Max.0.15

Max.1.00

Max.2.00

Max.0.200

Min.0.15

8.00~10.00

17.00~19.00

(2)

-

-

-

SUS303Se

303Se

Max.0.15

Max.1.00

Max.2.00

Max.0.200

Max.0.060

8.00~10.00

17.00~19.00

-

-

-

Se Min.0.15

SUS303Cu

-

Max.0.15

Max.1.00

Max.3.00

Max.0.200

Min.0.15

8.00~10.00

17.00~19.00

(2)

1.50~3.50

-

-

SUS304

304

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

8.00~10.50

18.00~20.00

-

-

-

-

SUS304L

304L

Max.0.03

Max.1.00

Max.2.00

Max.0.045

Max.0.030

9.00~13.00

18.00~20.00

-

-

-

-

SUS304N1

304N

Max.0.08

Max.1.00

Max.2.50

Max.0.045

Max.0.030

7.00~10.50

18.00~20.00

-

-

0.10~0.25

-

SUS304N2

-

Max.0.08

Max.1.00

Max.2.50

Max.0.045

Max.0.030

7.50~10.50

18.00~20.00

-

-

0.15~0.30

Nb Max.0.15

SUS304LN

304LN

Max.0.03

Max.1.00

Max.2.00

Max.0.045

Max.0.030

8.50~11.50

17.00~19.00

-

-

0.12~0.22

-

SUS304J3

-

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

8.00~10.50

17.00~19.00

-

1.00~3.00

-

-

SUS305

305

Max.0.12

Max.1.00

Max.2.00

Max.0.045

Max.0.030

10.50~13.00

17.00~19.00

-

-

-

-

SUS309S

309S

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

12.00~15.00

22.00~24.00

-

-

-

-

SUS310S

310S

Max.0.08

Max.1.50

Max.2.00

Max.0.045

Max.0.030

19.00~22.00

24.00~26.00

-

-

-

-

SUS316

316

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

10.00~14.00

16.00~18.00

2.00~3.00

-

-

-

SUS316L

316L

Max.0.03

Max.1.00

Max.2.00

Max.0.045

Max.0.030

12.00~15.00

16.00~18.00

2.00~3.00

-

-

-

SUS316N

316N

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

10.00~14.00

16.00~18.00

2.00~3.00

-

0.10~0.22

-

SUS316LN

316LN

Max.0.03

Max.1.00

Max.2.00

Max.0.045

Max.0.030

10.50~14.50

16.50~18.50

2.00~3.00

-

0.12~0.22

-

SUS316Ti

-

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

10.00~14.00

16.00~18.00

2.00~3.00

-

-

Ti Min.5xC%

SUS316J1

-

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

10.00~14.00

17.00~19.00

1.20~2.75

1.00~2.50

-

-

SUS316J1L

-

Max.0.03

Max.1.00

Max.2.00

Max.0.045

Max.0.030

12.00~16.00

17.00~19.00

1.20~2.75

1.00~2.50

-

-

SUS316F

-

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Min.0.10

10.00~14.00

16.00~18.00

2.00~3.00

-

-

-

SUS317

317

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

11.00~15.00

18.00~20.00

3.00~4.00

-

-

-

SUS317L

317L

Max.0.03

Max.1.00

Max.2.00

Max.0.045

Max.0.030

11.00~15.00

18.00~20.00

3.00~4.00

-

-

-

SUS317LN

-

Max.0.03

Max.1.00

Max.2.00

Max.0.045

Max.0.030

11.00~15.00

18.00~20.00

3.00~4.00

-

0.10~0.22

-

SUS317J1

-

Max.0.04

Max.1.00

Max.2.50

Max.0.045

Max.0.030

15.00~17.00

16.00~19.00

4.00~6.00

-

-

-

SUS836L

-

Max.0.03

Max.1.00

Max.2.00

Max.0.045

Max.0.030

24.00~26.00

19.00~24.00

5.00~7.00

-

Max.0.25

-

SUS890L

-

Max.0.02

Max.1.00

Max.2.00

Max.0.045

Max.0.030

23.00~28.00

19.00~23.00

4.00~5.00

1.00~2.00

-

-

SUS321

321

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

9.00~13.00

17.00~19.00

-

-

-

Ti Min.5xC%

SUS347

347

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

9.00~13.00

17.00~19.00

-

-

-

Nb Min.10xC%

SUSXM7

304Cu

Max.0.08

Max.1.00

Max.2.00

Max.0.045

Max.0.030

8.50~10.50

17.00~19.00

-

3.00~4.00

-

-

SUSXM15J1

-

Max.0.08

3.00~5.00

Max.2.00

Max.0.045

Max.0.030

11.50~15.00

15.00~20.00

-

-

-

-

Precipitation Hardening Grades

SUS630

S17400

Max.0.07

Max.1.00

Max.1.00

Max.0.040

Max.0.030

3.00~5.00

15.00~17.50

-

3.00~5.00

-

Nb 0.15~0.45

SUS631

S17700

Max.0.09

Max.1.00

Max.1.00

Max.0.040

Max.0.030

6.50~7.75

16.00~18.00

-

-

-

Al 0.75~1.50


* SUS329J1 denotes austenitic and ferritic stainless steel.

Note:
(1) May contain at most 0.6% Ni.
(2) May have at most 0.6% Mo added.
(3) May have at most 0.75% Mo added.

Remarks:
1) Ferritic SUS447J1 and SUSXM27 may contain at most 0.60% Ni.
  SUS447J1 and SUSXM27 may contain at most 0.50% Ni, 0.20% Cu, and 0.50% Ni + Cu; and any alloy element other than listed can be added if required.
2) With SUSXM15J1 any alloy element other than listed can be added if required.






 

Trade Information
  • Packaging Details
  • MARTENSITIC STAINLESS STEEL Martensitic, or hardenable stainless steels, are classified in the 400 series, usually with 11.5% chromium up to 18% chromium, with higher levels of carbon than ferritics, and are capable of being heat treated to a wide range of hardness and strength levels. Commercially produced AISI grades of this class are Type 410, 410H, 420, and 420HC. Martensitic stainless steels are used extensively in cutlery, sport knives and multi-purpose tools. Martensitic stainless steels can be high or low-carbon steels built around the Type 410 composition of iron, 12% chromium, and up to 1.2% carbon. They are usually tempered and hardened. Tempered martensite gives steel good hardness and high toughness; used largely for medical tools (scalpels, razors and internal clamps).  Untempered martensite is low in toughness and therefore brittle. Martensitic stainless steels work in the same way as many low alloy steels. Carbon is the key element. They have a structure similar to the ferritics with a 'body-centred tetragonal' (bct) crystal lattice. Normally, when steels are heated they transform from ferrite to austenite. On slow cooling the steel transforms back to ferrite. However, with fast cooling through quenching in water, oil or sometimes even air, the carbon atoms become trapped in a somewhat distorted atomic matrix. This is known as body-centred tetragonal. The distortion of the atomic matrix leads to the hard martensitic structure. The higher the carbon level the harder is the martensite. In the as-quenched condition, martensitic steels are virtually useless as they have insufficient impact toughness. Due to the addition of carbon, they can be hardened and strengthened by heat treatment, in a similar way to carbon steels. They are classed as a "hard" ferro-magnetic group. In the annealed condition, they have tensile yield strengths of about 275 MPa and so they are usually machined, cold formed, or cold worked in this condition. The strength obtained by heat treatment depends on the carbon content of the alloy. Increasing the carbon content increases the strength and hardness potential but decreases ductility and toughness. The higher carbon grades are capable of being heat treated to hardnesses of 60 HRC.  Optimum corrosion resistance is attained in the heat-treated i.e. hardened and tempered condition. Martensitic grades have been developed with nitrogen and nickel additions but with lower carbon levels than the traditional grades. These steels have improved toughness, weldability and corrosion resistance. Martensitic stainless steels, such as types 403, 410, 410NiMo and 420, are similar in composition to the ferrite group, but contain a balance of C and Ni vs. Cr and Mo; hence, austenite at high temperatures transforms to martensite at low temperatures. Like ferrite, they also have a body-centered cubic crystal structure in the hardened condition. The carbon content of these hardenable steels affects forming and welding. To obtain useful properties and prevent cracking, the weldable martensitics usually require preheating and postweld heat treatment. MAJOR GRADES OF MARTENSITIC STAINLESS STEEL: 410- BASIC GRADE 420- HIGHER HARDNESS GRADE 431- HIGHER CORROSION RESISTANT AND TOUGHNESS GRADE 440A/B/C- INCREASING HARDNESS AFTER HEAT TREATMENT 416- WELDING CONSUMABLE GRADES Martensitic stainless steels were the first stainless steels that were commercially developed (as cutlery) and have a relatively high carbon content (0.1 - 1.2%) compared to other stainless steels. They are plain chromium steels containing between 12 and 18% chromium. They are magnetic and hardenable by quenching and tempering like plain carbon steels and find their main application in cutlery, aerospace and general engineering. A relatively new group of martensitic stainless steels are the supermartensitic stainless steels. The supermartensitic grades combine high strength and low-temperature toughness with acceptable corrosion resistance in many applications. Martensitic Stainless Applications Martensitic stainless steel are typically used for: Knife blades Cutlery Surgical instruments Fasteners Shafts Springs MARTENSITIC STAINLESS STEELS TYPE Equivalent UNS 403 S40300 410 S41000 414 S41400 416 S41600 416Se S41623 420 S42000 420F S42020 422 S42200 431 S43100 440A S44002 440B S44003 440C S44004 Chemical composition of stainless steel Classification Specification Chemical Composition other JIS AISI C Si Mn P S Ni Cr Mo Cu N Martensitic Grades SUS403 403 Max.0.15 Max.0.50 Max.1.00 Max.0.040 Max.0.030 (1) 11.50~13.00 - - - - SUS410 410 Max.0.15 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 11.50~13.50 - - - - SUS410J1 - 0.08~0.18 Max.0.60 Max.1.00 Max.0.040 Max.0.030 (1) 11.50~14.00 0.30~0.60 - - - SUS410F2 - Max.0.15 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 11.50~13.50 - - - Pb 0.05˜0.30 SUS416 416 Max.0.15 Max.1.00 Max.1.25 Max.0.060 Min.0.15 (1) 12.00~14.00 (2) - - - SUS420J1 420 0.16~0.25 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 12.00~14.00 - - - - SUS420J2 420 0.26~0.40 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 12.00~14.00 - - - - SUS420F 420F 0.26~0.40 Max.1.00 Max.1.25 Max.0.060 Min.0.15 (1) 12.00~14.00 (2) - - - SUS420F2 - 0.26~0.40 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 12.00~14.00 - - - Pb 0.05~0.30 SUS431 431 Max.0.20 Max.1.00 Max.1.00 Max.0.040 Max.0.030 1.25~2.50 15.00~17.00 - - - - SUS440A 440A 0.60~0.75 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 16.00~18.00 (3) - - - SUS440B 440B 0.75~0.95 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 16.00~18.00 (3) - - - SUS440C 440C 0.95~1.20 Max.1.00 Max.1.00 Max.0.040 Max.0.030 (1) 16.00~18.00 (3) - - - SUS440F S44020 0.95~1.20 Max.1.00 Max.1.25 Max.0.060 Min.0.15 (1) 16.00~18.00 (3) - - - Ferritic Grades SUS405 405 Max.0.08 Max.1.00 Max.1.00 Max.0.040 Max.0.030 - 11.50~14.50 - - - Al 0.10~0.30 SUS410L - Max.0.03 Max.1.00 Max.1.00 Max.0.040 Max.0.030 - 11.00~13.50 - - - - SUS430 430 Max.0.12 Max.0.75 Max.1.00 Max.0.040 Max.0.030 - 16.00~18.00 - - - - SUS430F 430F Max.0.12 Max.1.00 Max.1.25 Max.0.060 Min.0.15 - 16.00~18.00 (2) - - - SUS434 434 Max.0.12 Max.1.00 Max.1.00 Max.0.040 Max.0.030 - 16.00~18.00 0.75~1.25 - - - SUS447J1 - Max.0.01 Max.0.40 Max.0.40 Max.0.030 Max.0.020 - 28.50~32.00 1.50~2.50 - Max.0.015 - SUSXM27 - Max.0.01 Max.0.40 Max.0.40 Max.0.030 Max.0.020 - 25.00~27.50 0.75~1.50 - Max.0.015 - Austenitic Ferritic Grades SUS329J1 329 Max.0.08 Max.1.00 Max.1.50 Max.0.040 Max.0.030 3.00~6.00 23.00~28.00 1.00~3.00 - - - SUS329J3L S31803 Max.0.03 Max.1.00 Max.2.00 Max.0.040 Max.0.030 4.50~6.50 21.00~24.00 2.50~3.50 - 0.08~0.20 - SUS329J4L S31260 Max.0.03 Max.1.00 Max.1.50 Max.0.040 Max.0.030 5.50~7.50 24.00~26.00 2.50~3.50 - 0.08~0.30 - Austenitic Grades SUS201 201 Max.0.15 Max.1.00 5.50~7.50 Max.0.060 Max.0.030 3.50~5.50 16.00~18.00 - - 0.25?? - SUS202 202 Max.0.15 Max.1.00 7.50~10.00 Max.0.060 Max.0.030 4.00~6.00 17.00~19.00 - - Max.0.25 - SUS301 301 Max.0.15 Max.1.00 Max.2.00 Max.0.045 Max.0.030 6.00~8.00 16.00~18.00 - - - - SUS302 302 Max.0.15 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.00~10.00 17.00~19.00 - - - - SUS303 303 Max.0.15 Max.1.00 Max.2.00 Max.0.200 Min.0.15 8.00~10.00 17.00~19.00 (2) - - - SUS303Se 303Se Max.0.15 Max.1.00 Max.2.00 Max.0.200 Max.0.060 8.00~10.00 17.00~19.00 - - - Se Min.0.15 SUS303Cu - Max.0.15 Max.1.00 Max.3.00 Max.0.200 Min.0.15 8.00~10.00 17.00~19.00 (2) 1.50~3.50 - - SUS304 304 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.00~10.50 18.00~20.00 - - - - SUS304L 304L Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 9.00~13.00 18.00~20.00 - - - - SUS304N1 304N Max.0.08 Max.1.00 Max.2.50 Max.0.045 Max.0.030 7.00~10.50 18.00~20.00 - - 0.10~0.25 - SUS304N2 - Max.0.08 Max.1.00 Max.2.50 Max.0.045 Max.0.030 7.50~10.50 18.00~20.00 - - 0.15~0.30 Nb Max.0.15 SUS304LN 304LN Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.50~11.50 17.00~19.00 - - 0.12~0.22 - SUS304J3 - Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.00~10.50 17.00~19.00 - 1.00~3.00 - - SUS305 305 Max.0.12 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.50~13.00 17.00~19.00 - - - - SUS309S 309S Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 12.00~15.00 22.00~24.00 - - - - SUS310S 310S Max.0.08 Max.1.50 Max.2.00 Max.0.045 Max.0.030 19.00~22.00 24.00~26.00 - - - - SUS316 316 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.00~14.00 16.00~18.00 2.00~3.00 - - - SUS316L 316L Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 12.00~15.00 16.00~18.00 2.00~3.00 - - - SUS316N 316N Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.00~14.00 16.00~18.00 2.00~3.00 - 0.10~0.22 - SUS316LN 316LN Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.50~14.50 16.50~18.50 2.00~3.00 - 0.12~0.22 - SUS316Ti - Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.00~14.00 16.00~18.00 2.00~3.00 - - Ti Min.5xC% SUS316J1 - Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 10.00~14.00 17.00~19.00 1.20~2.75 1.00~2.50 - - SUS316J1L - Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 12.00~16.00 17.00~19.00 1.20~2.75 1.00~2.50 - - SUS316F - Max.0.08 Max.1.00 Max.2.00 Max.0.045 Min.0.10 10.00~14.00 16.00~18.00 2.00~3.00 - - - SUS317 317 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 11.00~15.00 18.00~20.00 3.00~4.00 - - - SUS317L 317L Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 11.00~15.00 18.00~20.00 3.00~4.00 - - - SUS317LN - Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 11.00~15.00 18.00~20.00 3.00~4.00 - 0.10~0.22 - SUS317J1 - Max.0.04 Max.1.00 Max.2.50 Max.0.045 Max.0.030 15.00~17.00 16.00~19.00 4.00~6.00 - - - SUS836L - Max.0.03 Max.1.00 Max.2.00 Max.0.045 Max.0.030 24.00~26.00 19.00~24.00 5.00~7.00 - Max.0.25 - SUS890L - Max.0.02 Max.1.00 Max.2.00 Max.0.045 Max.0.030 23.00~28.00 19.00~23.00 4.00~5.00 1.00~2.00 - - SUS321 321 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 9.00~13.00 17.00~19.00 - - - Ti Min.5xC% SUS347 347 Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 9.00~13.00 17.00~19.00 - - - Nb Min.10xC% SUSXM7 304Cu Max.0.08 Max.1.00 Max.2.00 Max.0.045 Max.0.030 8.50~10.50 17.00~19.00 - 3.00~4.00 - - SUSXM15J1 - Max.0.08 3.00~5.00 Max.2.00 Max.0.045 Max.0.030 11.50~15.00 15.00~20.00 - - - - Precipitation Hardening Grades SUS630 S17400 Max.0.07 Max.1.00 Max.1.00 Max.0.040 Max.0.030 3.00~5.00 15.00~17.50 - 3.00~5.00 - Nb 0.15~0.45 SUS631 S17700 Max.0.09 Max.1.00 Max.1.00 Max.0.040 Max.0.030 6.50~7.75 16.00~18.00 - - - Al 0.75~1.50 * SUS329J1 denotes austenitic and ferritic stainless steel. Note: (1) May contain at most 0.6% Ni. (2) May have at most 0.6% Mo added. (3) May have at most 0.75% Mo added. Remarks: 1) Ferritic SUS447J1 and SUSXM27 may contain at most 0.60% Ni.   SUS447J1 and SUSXM27 may contain at most 0.50% Ni, 0.20% Cu, and 0.50% Ni + Cu; and any alloy element other than listed can be added if required. 2) With SUSXM15J1 any alloy element other than listed can be added if required.

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