AISI 8617 Alloy Steel (UNS G86170)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations

Introduction

Alloy steels are designated by AISI four-digit numbers. They are more susceptible to mechanical and heat treatments than carbon steels. They comprise different types of steels with compositions which exceed the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va in the carbon steels.

The datasheet given below provides more details about AISI 8617 alloy steel.

Chemical Composition

The chemical composition of AISI 8617 alloy steel is listed in the following table.

Element Content (%)
Iron, Fe
98
Manganese, Mn 0.70-0.90
Nickel, Ni 0.40-0.70
Chromium, Cr 0.40-0.60
Phosphorous, P 0.035 (max)
Silicon, Si 0.15-0.30
Molybdenum, Mo 0.15-0.25
Carbon, C 0.15-0.20
Sulfur, S 0.04 (max)

Physical Properties

The following table shows the physical properties of AISI 8617 alloy steel.

Properties Metric Imperial
Density 7.7 – 8.03 g/cm3 0.278 – 0.290 lb/in³

Mechanical Properties

The mechanical properties of AISI 8617 alloy steel are outlined in the following table.

Properties Metric Imperial
Modulus of elasticity 190-210 GPa 27557-30458 ksi
Poissons ratio 0.27 – 0.30 0.27-0.30

Other Designations

Other designations that are equivalent to AISI 8617 alloy steel include the following.

AMS 6272 ASTM A752 AFNOR 22 NCD 2 B.S. 805 H 20
ASTM A29 ASTM A829 DIN 1.6523 B.S. 805 M 20
ASTM A322 SAE J1397 UNI 20 NiCrMo 2 AMS 6272E
ASTM A331 SAE J404 JIS SNCM 21 ASTM A505
ASTM A519 AFNOR 20 NCD 2 JIS SNCM 21 H SAE J770

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