4330 Product Guide

Applications | Mechanical and Chemical Data | Tolerances

Overview

Offering a good mixture of high strength, impact control, and machinability, 4330 steel is popular in a range of high stress industries. 4330 is optimally suited for cold working though it can also be hot worked. It is easily welded as well. This alloy is typically used in the aerospace, automotive, gas, and oil industries.

Common Trade Names

UNS J24054, AISI 4330, Alloy Steel

Other Resources

Weight Calculator | Mill Test Reports

Products

4330 Round Bar

Applications

Aerospace
Automotive
Oil & Gas

	VAR MOD
Physical Properties 4330
Density	0.283 lb/in3
Ultimate Tensile Strength	220-240 ksi
Yield Tensile Strength	185-195 ksi
Hardness Rockwell \| Brinell	C36-42 \| 341-388
Elongation at Break Percentage	11%
Reduction of Area Percentage	35-47%
Melting Point	2,600 °F
Specific Heat	1.6 x 10^-1 BTU/lb-°F

Chemistry Information
Element	Percentage
C	0.3 - 0.34
Mn	0.75 - 1
Ni	1.65 - 2
Cr	0.75 - 1
Mo	0.4 - 0.5
P	0.025
Si	0.15 - 0.35
V	0.05 - 0.1
S	0.01