Introduction
Alloy steels comprise a wide range of steels having compositions that exceed the limitations of Si, Va, Cr, Ni, Mo, Mn, B and C allocated for carbon steels. These steels contain elements such as chromium, cobalt, nickel, etc.
In comparison with carbon steels, alloy steels are a lot more responsive to mechanical and heat treatments. Alloy steels can be subjected to unique melting and deoxidization processes for specific kind of applications.
AISI 9310 alloy steel is a low alloy steel containing molybdenum, nickel and chromium.
The following datasheet provides an overview of AISI 9310 alloy steel.
Chemical Composition
The chemical composition of AISI 9310 alloy steel is outlined in the following table.
| Element | Content (%) |
| Nickel, Ni | 3.00-3.50 |
| Chromium, Cr | 1.00-1.40 |
| Manganese, Mn | 0.45-0.65 |
| Silicon, Si | 0.15-0.30 |
| Phosphorus, P | 0.025 (max) |
| Sulfur, S | 0.025 (max) |
| Molybdenum, Mo | 0.08-0.15 |
| Carbon, C | 0.08-0.13 |
Physical Properties
The following table shows the physical properties of AISI 9310 alloy steel.
| Properties | Metric | Imperial |
| Density | 7.7-8.03 g/cm3 | 0.278-0.290 lb/in3 |
| Melting point | 1427 �C | 2600�F |
Mechanical Properties
The mechanical properties of AISI 9310 alloy steel are displayed in the following table.
| Properties | Metric | Imperial |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.33 | 0.33 |
Other Designations
Equivalent materials to AISI 9310 alloy steel are:
AMS 6260G
AMS 6265C
AMS 6267A
Fabrication and Heat Treatment
Tempering
AISI 9310 alloy steel is usually tempered at 149°C (300°F).
Annealing
AISI 9310 alloy steel is annealed at 857°C (1575°F) and then slowly cooled in the furnace.
Cold Working
Conventional methods are used to cold work AISI 9310 alloy steel that has good ductility in the tempered and hardened conditions.
Welding
AISI 9310 alloy steel has good weldability characteristics as it can be welded by a standard process along with the usage of established welding methods.
Forging
AISI 9310 alloy steel is forged at 1191°C (2175°F) down to 927°C (1700°F).
Forming
AISI 9310 alloy steel can be readily formed by conventional procedures as this steel has good ductility even in the tempered and quenched condition.
Machinability
AISI 9310 alloy steel can be machined by conventional methods and good results are obtained when this alloy steel is machined in the tempered or annealed condition.
Heat Treatment
AISI 9310 alloy steel is carburized by being heated at 927°C (1700°F) and then oil quenched. This alloy steel is then normalized at 899°C (1650°F), followed by air cooling and then tempering at 149°C (300°F).
Hardening
AISI 9310 alloy steel can be hardened by cold working or by thermal treatment and oil quenching.
Source - www.azom.com
(www.steelguru.com)
