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300M Ultrahigh Strength Steel
Categories: Metal; Ferrous Metal; Alloy Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel

Material Notes: Phosphorous and sulfur content may vary. Silicon content helps to prevent embrittlement when tempered at low temperatures. Easily processed by hot forging; slow cooling is needed to prevent stress cracking.

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Physical PropertiesMetricEnglishComments
Density 7.87 g/cc0.284 lb/in³Typical of steel
 
Mechanical PropertiesMetricEnglishComments
Modulus of Elasticity 205 GPa29700 ksiTypical of steel
Poissons Ratio 0.280.28Calculated
Shear Modulus 80.0 GPa11600 ksiTypical of steel
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.40 - 0.46 %0.40 - 0.46 %
Chromium, Cr 0.70 - 0.95 %0.70 - 0.95 %
Iron, Fe 93.4 - 94.8 %93.4 - 94.8 %As remainder
Manganese, Mn 0.65 - 0.90 %0.65 - 0.90 %
Molybdenum, Mo 0.30 - 0.45 %0.30 - 0.45 %
Nickel, Ni 1.65 - 2.0 %1.65 - 2.0 %
Phosphorus, P <= 0.035 %<= 0.035 %
Silicon, Si 1.45 - 1.8 %1.45 - 1.8 %
Sulfur, S <= 0.040 %<= 0.040 %
Vanadium, V >= 0.050 %>= 0.050 %

References for this datasheet.

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MS300M / 13934

Specialty Compounds RTP Company

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