65Mn steel wire is a Chinese GB standard spring steel grade wire, Manganese (Mn) improves hardenability, so the strength, hardness, elasticity and hardenability are higher than that of 65# steel, but it has overheat sensitivity and temper brittleness. Water quenching tends to form cracks. The annealed state has good machinability, low cold deformation plasticity, and poor weldability.
It is available for choice with size range of 0.40mm to 5.00mm.
Due to its favorable properties, 65Mn steel wire is commonly employed in the manufacturing of springs, including wave springs. Its excellent tensile strength and elasticity make it ideal for applications where the spring is subjected to high stress or requires repeated bending without losing its shape or functionality.
Chemical composition
The table below lists 65Mn high carbon steel wire chemical composition based on heat analysis.
Chemical Composition,%
Standard
Grade
C
Si
P
S
Cu
Mn
Cr
Ni
GB/T 1222
65Mn
0.62-0.70
0.17-0.37
≤0.03
≤0.03
≤0.25
0.90-1.20
≤0.25
≤0.35
Mechanical Properties
The mechanical properties of 65Mn Steel Wires are outlined in the following table.
Tensile Strength
Conditions to
Yield Strength
Elongation
Reduction of Area
Hardness
(Hot Rolled)
σb (MPa):≥980
σ0.2 (MPa):≥785
δ 5 (%):≥8
ψ (%):≥30
≤302HB
Packing
Packings for 65Mn steel wire are available in coils,with spools,pallets and wooden cases.
In Coils
Wooden Case
Pallet
Plastic Spools
Main advantages for 65Mn steel wire:
1. High Strength and Toughness: 65Mn steel wire boasts impressive tensile strength and toughness, making it ideal for high-stress applications.
2. Wear Resistance: This material is exceptionally resistant to wear and tear, ensuring longevity in demanding environments.
3. Elasticity: Its high elastic limit makes it perfect for springs and components that require significant flexibility without deformation.
4. Cost-Effectiveness: Compared to other high-performance steels, 65Mn steel wire offers a cost-effective solution without compromising on quality.
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