Metallurgy Interview Question:

What is the minimum temperature for stress relieving of ASTM A 519 Gr.4130 material and please tell us where we can find the location.

Submitted by: Administrator

Stress relieving of alloy steels (like 4130) has no temperature outlined in the spec of the material. However, it is common practice to stress relieve 4130 between 1050 and 1200 F. This is high enough to relieve the stress with out being hot enough that the material has an austenitic phase change, which occurs around 1350 F.
Submitted by: Administrator