GD60 Non-Magnetic Steel, GD60 High-Manganese Non-Magnetic Steel Plate, Non-Magnetic Steel, Mold Steel, HPM75 Non-Magnetic Steel, Factory Direct Sale

Chemical Composition:

Carbon C: 0.30～0.55

Silicon (Si): 0.30～0.80

Manganese (Mn): 17.00～19.00

Sulfur (S): ≤0.05

Phosphorus (P): ≤0.08

Chromium (Cr): 3.00～5.00

Mechanical properties:

Tensile Strength σb (MPa): Grade I, ≥895

Condition yield strength σ0.2 (MPa): Grade I, ≥760

δ5 elongation (%): Grade I, ≥25

Section reduction rate ψ (%): Grade I, ≥35

Heat Treatment Specifications:

After hot forming and before deformation strengthening: solution heat treatment.

Post-deformation strengthening: Heat to 320～350℃ at a rate of ≤40℃/h, hold for 8～12h, then cool down slowly to 10 at a rate of ≤40℃/h.

Below 0°C to relieve residual stress.

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