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ASTM 128 GRADE B2

ASTM 128 GRADE B2
ASTM 128 GRADE B2
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Product Code : 22
Product Description

ASTM 128 GRADE B2

Sheffield 14% Manganese is a true Hadfield Austenitic Manganese steel for resistance to severe impact and abrasive wear. This product will work harden in service up to 550 BHN. Because this product hardens under cold work conditions care should be taken when forming, drilling or machining is being considered.

Sheffield 14% Manganese can be welded with standard manganese electrodes. Please use only certified personnel who are familiar working with this type of material. Drilling is not recommended for this product.

Manganese is gray-white metal with a pinkish tinge, and a very brittle but hard metallic element. Manganese is a reactive element that easily combines with water and air. It is a steel with a relatively large component about 10-14% of manganese; highly resistant to wear and shock.

The original austentic manganese steel, containing about 1.2%C and 12% Mn.

MANGANESE ADVANTAGES

WORK HARDENING refers to the fact that the steel becomes harder and harder the more it is impacted or compressed.

The “Hadfield” grade has an original hardness of approximately 220 BRINELL. With continued impact and /or compression it will surface harden to over 550 BRINELL.

It should be noted that only the outer skin surface hardens. The under layer remains highly ductile and tough. As the surface wears, it continually renews itself becoming harder and harder.

Manganese steel is an austenitic steel which means it is non-magnetic. This property makes it useful in many applications such as bottom plates for lifting magnets – separator drum shells for magnetic materials – wear shoes on electric brakes etc.



Advantages

Resistance to high abrasion and severe impact.
• Will work hardened rapidly to 550BHN.
• Remains ductile throughout.
• Hadfield Grade.
• Can be welded.
• Has non-magnetic properties.
• Can be cut with oxy-acetylene torch, plasma, water jet, or laser.
• Made to the toughest standards in the industry for extended service life.

Applications

  • Wheelabrators

  • Shake-Out Decks

  • Shot Blast Cabinets

  • Sintering Seal Bars

  • Scrappers

  • Screens

  • Crusher Liners

  • Grader Blades

  • Elevator Buckets

  • Baffle Plates

  • Stone Chutes

  • Bucket Liners

  • Crusher Jaws

  • Hammers

  • Chain Wear Bars

  • Grizzly Bars


CHEMICAL COMPOSITION (TYPICAL)


C (%)

Mn (%)

Si (%)

S (%)

P (%)

ASTM 128 Gr B2

1.05 – 1.2

11.5 – 14

< 1.0

<0.070



MECHANICAL CHARACTERISTICS

YIELD

TENSILE UTS 20° C (68° F)

ELONGATION

CHARPY Kcvl 20°C (4°F)

HARDNESS BHN

350 MPa

51 KSI

940 MPa

136 KSI

(5d)

40%

>140J/cm2

100 ft. lbs

220 to

540


EQUIVALENT STANDARDS:


STANDRADS


EURONORM

DIN

ASTM

AFNOR

GRADES

X120Mn13

1.3401

A128 GR B2

A128M

X120Mn13

2,56,870

STANDRADS


IS:2000

IS:1993

BS

GRADES

276

2708

3100

 


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