AISI 4130 round bars

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11-May-2024

AISI 4130 alloy steel is widely used as a quenching and tempering steel. has excellent properties,and can be used in the temperature under 427℃.

AISI 4130 round bar

According to its high strength, hardenability, toughness properties, can be used to forge piece,such as large gear to locomotive traction,driver gear of turbocharger, backshaft, connecting rod bearing heavy load, coupling crank of oil deep well drill stem, and some refloatation tools.

AISI 4130 alloy steel can be produced into hot rolled round bars and square bars, cold-drawing bars,forged bars. We henan KUNFENG can supply AISI 4130 all of shapes.

According to the market needs, henan KUNFENG supply the oversea markets for 4130 hot rolled round bars OD 6mm -80 mm and 4130 forged round bars OD 80 mm - 1200 mm, also 4130 forged square bars OD 100- 1200 mm. The OD tolerance is about 0-3 mm and length tolerance is about 0-20 mm.

are usually produced under the followed procedures: EAF arc furnace + LF purify affinage + VDF + ingot steel(bottom gating /argon) + forged + annealing + black polishing (turnery) + Sep 1921-C/c,D/d,E/e UT test + smooth edges with sawing .

AISI 4130 bars chemical composition by %,maximum:

Grade	C	Si	Mn	Cr	Mo	P	S
AISI 4130	0.28-0.33	0.15-0.35	0.4-0.8	0.8-1.1	0.15-0.25	0.035	0.04

AISI 4130 bars mechanical properties

Grade	Delivery State	T.S. N/mm2 Min	Y.S. N/mm2 Min	A,% Min	Z,% Min	Hardness, (annealing or tempering) HB,max	Forging ratio	Grain Size (level)	Nonmetal ratio
AISI 4130	Hot rolled, forged, or heat treatment	930	735	12	50	229	≥ 4:1	≥ 6	≤ 2.0