Alloy Steel 3310 AISI 3310

Alloy Steel 3310 – AISI 3310

 General Characteristics Alloy steel 3310 is a case-hardening nickel-chromium steel with excellent toughness and strength properties.

Chemical Analysis

C% 

Mn%

 P%

S% 

Si%

Ni%

Cr%

 .08/.13 

 0.45/0.60 

.025max

.025 max

 .20/.35 

3.25/3.75

1.4/1.75

Applications

This alloy is used in the production of forged components with large cross sections that require high toughness and core strength such as forged gears, crankshafts and heavy-duty gear shafts in aircraft and truck manufacture.

Forging

This alloy would be forged at a temperature in the region of 2200 to 1700ºF (1200 and 925ºC.)

Heat Treatment

Annealing: This alloy would seldom be annealed Normalizing: A nominal normalizing temperature for this steel is 1700ºF (925ºC) followed by air cooling. Carburizing: The steel would be carburized at 1650-1740ºF (900-950ºC) followed by water quench for large components of simple shape only, otherwise oil quench. Hardening: Core: 1525-1580ºF (830-860ºC.) Case: 1440-1470ºF (780-800ºC.) For both core and case hardening, water quench for large components of simple shape only, otherwise oil quench Tempering: At 340-410ºF (170-210ºC.) Machinability: This alloy is readily machined from either an as-forged or normalized structure. Weldability: The alloy may be readily welded, but only prior to case hardening and subsequent heat treatment.