AISI 8617H Alloy Steel (UNS H86170)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Other Designations


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

The following datasheet provides more details about AISI 8617H alloy steel.

Chemical Composition

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

Element Content (%)
Iron, Fe
~ 96
Manganese, Mn 0.60-0.95
Nickel, Ni 0.35-0.75
Chromium, Cr 0.35-0.65
Phosphorous, P 0.035
Silicon, Si 0.15-0.30
Molybdenum, Mo 0.15-0.25
Carbon, C 0.14-0.20
Sulfur, S 0.04

Physical Properties

The following table shows the physical properties of AISI 8617H 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 8617H 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 8617H alloy steel include the following:

  • ASTM A304
  • SAE J1268
  • AFNOR 20 NCD 2
  • AFNOR 22 NCD 2
  • DIN 1.6523
  • UNI 20 NiCrMo
  • JIS SNCM 21
  • JIS SNCM 21 H
  • B.S. 805 H 20
  • B.S. 805 M 20

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