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AISI 4135
Category Steel
Class Alloy steel
Type Standard
Common Names Chromium-molybdenum steel
Designations  France: AFNOR 35 CD 4 , AFNOR 35 CD 4 TS
Germany: DIN 1.7220
Italy: UNI 34 CrMo 4 KB , UNI 35 CrMo 4 , UNI 35 CrMo 4 F
Japan: JIS SCCrM 3 , JIS SCM 1
Sweden: SS 2234
United Kingdom: B.S. 708 A 37
United States: AMS 6365C , AMS 6365E , AMS 6372C , AMS 6372D , ASTM A355 , ASTM A519 , ASTM A711 , MIL SPEC MIL-S-16974 , MIL SPEC MIL-S-18733 , SAE J404 , SAE J412 , SAE J770 , UNS G41350

Composition

ElementWeight %
C  0.33-0.38 
Mn  0.70-0.90 
P  0.035 (max) 
S  0.04 (max) 
Si  0.15-0.30 
Cr  0.30-1.10 
Mo  0.15-0.25 

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  
Glossary