January 31, 2019

Manganese Steel ASTM A128 GR A

ASMT A128 Grade A (UNS J91109) is Manganese steel for abrasive casting application.

STM A128 / A128M – 93(2017) Standard Specification for Steel Castings, Austenitic Manganese

ASMT A128 Grade A Casting Chemical Composition Requirements and Mechanical Property:
Carbon: 1.05-1.35
Manganese: 11.0 min
Silicon: 1.00 max
Phosphorus: 0.070 max

No Mechanical Property required in ASTM A128 standard. www.castingquality.com

ASTM A128 Grade A Casting Heat treatment process:
The castings shall be suitably heat treated to achieve toughness and ductility. This heat treatment shall consist of uniformly heating the castings to a temperature applicable for grade of steel produced, at least 1800°F [1000°C], and holding until the temperature is uniform throughout and quenching in an applicable medium, normally water.

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  1. Sand Casting

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    Sand Casting is a popular metal form method, are suitable for all materiel, such as grey iron, ductile iron, malleable iron, carbon steel, stainless steel, aluminum and bronze.

  2. Investment Casting

    also named as precision lost wax casting, mainly suitalbe for carbon steel and stainless steel parts. We also provide grey iron and ductile iron and aluminum and bronze parts by investment casting. It can achieve the best appearance with good tolerance

  3. Shell Casting

    Shell casting method is a good option to replace investment casting and sand casting. the quality is better than sand casting parts, suitable for bulk production.

  4. CNC Machining

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Manufacture Process: Sand Casting, precision lost wax Investment Casting.

ASTM A128 Grade A Casting Application:
the material is mainly used as wear-resistant steel castings, such as impact curtain, crushing chamber, crushers, blow bars, impact plates, side liners.



Manganese steel can be welded, no preheat required and control the temperature in 300 °C to avoid brittle.

ASTM A128 Grade A Equivalent Steel Grades:
GB/T 5680 Grade ZGMn13-2
ROCT 977 Grade 110r13g
JIS 5131 Grade SCMnH2
ISO 13521 Grade GX120M13


Manufacture Process in Casting Quality: Sand Casting, Precision Lost Wax Investment Casting.

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