GB/T 3077 40Cr Steel — Specifications & Listings

GB/T 3077

Chromium alloy engineering steel with good hardenability, strength and wear resistance after heat treatment. Widely used for medium-duty mechanical and automotive components.

Category: Alloy Steel

Grade Details

Grade	GB/T 3077 40Cr
Standard	GB/T 3077
Description	Chromium alloy engineering steel with good hardenability, strength and wear resistance after heat treatment. Widely used for medium-duty mechanical and automotive components.
Applications	shafts, gears, bolts, spindles, connecting rods, machine parts

Equivalent / Similar Grades

Grade	Standard	Region
AISI 5140	AISI	USA
41Cr4	DIN EN 10083	Germany
SCr440	JIS G4053	Japan
EN19	BS970	UK

Chemical Composition (%)

C	Si	Mn	S	P	Cr
0.37-0.44	0.17-0.37	0.50-0.80	<=0.035	<=0.035	0.80-1.10

Mechanical Properties

tensile_strength	>=980 MPa
yield_strength	>=785 MPa
elongation	>=9%
hardness	<=207 HB

Typical Available Sizes

Round Bar	16-500 mm dia
Flat Bar	25-300 mm width

Sizes are indicative. Contact seller for exact availability.

Active GB/T 3077 40Cr Listings on M-EX

No active GB/T 3077 40Cr listings at this time.