Sep 20 2012
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 |