65Mn steel plate is generally used for small-sized various flat and round springs, seat cushion springs, spring springs, and can also be made into spring rings, valve springs, clutches, brake springs, and cold drawn steel wire cold coil coil springs. Material name: Spring steel Brand: 65Mn Standard: GB/T 1222-2007 Characteristics and scope of application: After heat treatment and cold drawing hardening, the strength is high, and it has a certain degree of toughness and plasticity; Under the same surface state and complete quenching, the fatigue limit is equivalent to that of alloy springs. However, it has poor hardenability and is mainly used for smaller sized springs, such as pressure regulating and speed regulating springs, force measuring springs, circular and square spiral springs in general machinery, or springs drawn into steel wires for small machinery.
Chemical composition of 65MN steel plate
Grade
C
Si
Mn
Cr
P
S
Cu
Ni
65Mn
0.62～0.70
0.17～0.37
0.90～1.20
≤0.25
≤0.035
≤0.035
≤0.25
≤0.25
Mechanical property of 65MN steel plate
Grade
Yield Strength (MPa)
Ultimate Tensile Strength (MPa)
Elongation at Break (%)
65Mn
430
735
14-21.5
Product Introduction of 65MN steel plate
Product name
Alloy high strength steel 65Mn DIN 60Si2Mn 55Si2Mn spring steel plate
Standrad
GB JIS ASTM DIN
Thickness
1.5-20mm
Width
1250-2000mm
Technique
Hot rolled,cold rolled
Surface Treatment
Clean, blasting and painting according to customer requirement
Thickness tolerance
±0.1mm
Application
65Mn steel can make a general section size of 8~15mm or so small spring such as a variety of small size flat round spring, bottom spring spring spring, also suitable for the production of spring ring valve spring clutch reed brake spring, etc 65Mnj is one of the materials for making all kinds of board springs and silk springs.
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