AISI 4130 is a low alloy steel containing molybdenum and chromium as strengthening agents. The carbon content is nominally 0.30% and with this relatively low carbon content the alloy is excellent from the fusion weld ability standpoint. The ASTM A519 4130alloy can be hardened by heat treatment.
This grade is similar to 4140 in scope which has a higher carbon level giving 4130 an advantage when it comes to weld ability, this weld ability is achieved at the cost of through section hardenability.

AISI 4130 steel is a low alloy steel that is used in structural designs that may be found in applications such as aircraft engine mounts or welded tubing. It is well known for its ease of welding and ability to harden in commercial applications. It is commonly referred to as chromium-molybdenum steel.

Mechanical Properties:

Condition Hardened & Tempered
UTS Min: 100 KSI
0.2% Proof Stress Min: 80 KSI
Elongation Min: 20 %
Reduction of Area Min: 40 %

Grade and Chemical composition:

Range C Si Mn P S Cr Mo
Min 0.28 0.15 0.4 0.8 0.15
Max 0.33 0.35 0.6 0.035 0.04 1.1 0.25


Hot-rolled:    OD:51-508 mm; WT: 7-60 mm; L: Max 16000 mm

Cold-Drawn: OD: 10-50 mm; WT: 2-10 mm; L: Max 16000 mm

Specifications in accordance with customer requirements.


Beveled/black painting/plastic caps/in bundles/steel strips/wooden box/

accordance with customer requirements.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting, Epoxy & Fbe Coating

Painting as requested