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AISI 8617
Category Steel
Class Alloy steel
Type Standard
Common Names Nickel-chromium-molybdenum steel
Designations  France: AFNOR 20 NCD 2 , AFNOR 22 NCD 2
Germany: DIN 1.6523
Italy: UNI 20 NiCrMo 2
Japan: JIS SNCM 21 , JIS SNCM 21 H
United Kingdom: B.S. 805 H 20 , B.S. 805 M 20
United States: AMS 6272 , AMS 6272E , ASTM A322 , ASTM A331 , ASTM A505 , SAE J404 , SAE J770 , UNS G86170

Composition

ElementWeight %
C  0.15-0.20 
Mn  0.70-0.90 
P  0.035 (max) 
S  0.04 (max) 
Si  0.15-0.30 
Cr  0.40-0.60 
Ni  0.40-0.70 
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