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GB/T 3077 40Cr Steel — Specifications & Listings

GB/T 3077Chromium alloy engineering steel with good hardenability, strength and wear resistance after heat treatment. Widely used for medium-duty mechanical and automotive components.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeGB/T 3077 40Cr
StandardGB/T 3077
DescriptionChromium alloy engineering steel with good hardenability, strength and wear resistance after heat treatment. Widely used for medium-duty mechanical and automotive components.
Applicationsshafts, 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

GB/T 3077 40Cr Round Bar
4.500 MT
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GB/T 3077 40Cr Round Bar
2.800 MT
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