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GB/T 699-2015 55 / GB/T 699 55 Steel - Specifications & Listings

GB/T 699-2015 55: 55 steel is a high carbon structural steel with good wear resistance and high hardness after heat treatment. The grade is suitable for springs and high-strength mechanical parts.

Forms: Round Bar Category: Carbon Steel
Grade Details
GradeGB/T 699-2015 55 / GB/T 699 55
StandardGB/T 699-2015
Description55 steel is a high carbon structural steel with good wear resistance and high hardness after heat treatment. The grade is suitable for springs and high-strength mechanical parts.
ApplicationsUsed for springs, wear plates, shafts, rollers, high-strength pins, and machine tools.
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Balanced
Chemical Composition (%)
C Si Mn P S
0.52-0.60 0.17-0.37 0.50-0.80 0.035 max 0.035 max
Mechanical Properties
tensile_strength 700-900 MPa
yield_strength 420-600 MPa
elongation 10-16%
hardness 200-260 HB

Active GB/T 699-2015 55 / GB/T 699 55 Listings on M-EX (For Sale)

GB/T 699-2015 55 / GB/T 699 55 Round Bar
4.500 MT
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GB/T 699-2015 55 / GB/T 699 55 Round Bar
4.100 MT
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