4130 ALLOY STEEL BARS AND TUBING

4130 ALLOY STEEL BAR & TUBE

4130 (AMS 6360, AMS 6370, AMS 6371, AMS 6348)
is a through hardening low alloy steel containing molybdenum and chromium as strengthening agents. 4130 responds well to nitriding for very good wear and abrasion resistance.

Specific Gravity

7.8 g/cm3

Typical Applications

Related Specifications

Aircraft engine mounts

Aircraft seating

Roll Cages

Bicycle frames

Well head components

AMS 6360

AMS 6370

AMS 6371

AMS 6348

UNS G41300

Mil S 6758

Mil T 67366

Chemical Composition (Wt %)

	C	Mn	P	S	Si	Cr	Ni	Mo
Min	0.28	0.40	–	–	0.15	0.80	–	0.15
Max	0.33	0.60	0.025	0.025	0.35	1.10	0.25	0.25

Typical Mechanical Properties

	0.2% Proof Stress	Tensile Strength	Elongation	Reduction of area	Hardness
	MPA	MPA	%	%	HRC
Tube	482	655	12
Bar (Hardened and Tempered)	517 (min)	655 (min)	20 (min)	40 (min)	18-22

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