BZ4140 Alloy Steel

STEEL GRADE OF VARIOUS COUNTRIES	GB	AISI	DIN	JIS	ASSAB
	42CrMo	4140	17200	SCM440	--

CHEMICAL COMPOSITION	C	Si	Mn	Cr	Mo
BZ4140	0.4	0.20	0.9	0.9	0.2

BZ4140/42CRMO/4140/SCM440/17200 Alloy Mould Steel, mold steel,tool steel

CONVENTIONAL SMELTING

EF+LF+VD

DELIVERY STATUS

Pre-hardened HRC 28-34 or annealing

DELIVERY SIZE

Thickness 20-400mm, Width 600-2200mm, Length 1000-6000mm

The Main Purpose

1. ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. 

2. Typical applications for 4140 tool steel uses include Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings,  Nuts, Pinch Bars, Pinions,  brake dies, trim dies, bolsters, machinery parts and components, etc.

The Main Characteristic

AISI 4140 is a low alloy steel. Low alloy steels rely on elements other than just iron and carbon to enhance their mechanical properties. In AISI 4140, additions of chromium, molybdenum, and manganese are used to increase the strength and hardenability of the steel. The additions of chromium and molybdenum are why AISI 4140 is considered a “chromoly” steel.