eFunda: Properties of Alloy Steel AISI 4137H
engineering fundamentals Alloy Steel AISI 4137H
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AISI 4137H
Category Steel
Class Alloy steel
Type H-steel
Common Names Chromium-molybdenum steel
Designations  France: AFNOR 40 CD 4 , AFNOR 42 CD 4
Germany: DIN 1.7225
Italy: UNI 38 CrMo 4 KB , UNI 40 CrMo 4 , UNI G 4O CrMo 4
Japan: JIS SCM 4 , JIS SCM 4 H
Sweden: SS 2244
United Kingdom: B.S. 708 A 42 , B.S. 708 M 40 , B.S. 709 A40
United States: ASTM A304 , SAE J1268 , UNS H41370

Composition

ElementWeight %
C  0.34-0.41 
Mn  0.60-1.00 
Cr  0.75-1.20 
Mo  0.15-0.25 
P  0.035 
S  0.040 
Si  0.15-0.30 

Mechanical Properties

Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.7-8.03 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
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