SCM430 1.7220 4130

SCM430 1.7220 4130 General cold work die steel with good machinability,to be made die casting mold,extrusion and injection mold and ejector pins,ejector sleeve,punches,block gauge,measuring tools.
High wear resistance,high toughness,small deformation caused by heat treatment.
Have a high and uniform hardness after heat treatment,heat resisting,resistance to high temperature oxidation,good toughness,machinability and weldability.
Annealing ≤HB255,pre-hardened HRC 40-46/HRC50-55.

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DELIVERY CONDITION:

COLD DRAWN ROUND BAR

COLD DRAWN COIL

Delivery Specification and Technical Condition

Coil

Size mm	Tolerance mm	Ovality mm
Φ1.5-Φ3.0	±0.01	≤0.01
Φ3.1-Φ6.0	±0.015	≤0.015
Φ6.1-Φ16.0	±0.018	≤0.018
Φ16.1-Φ20.0	±0.02	≤0.020
Φ20.1-Φ25.0	±0.03	≤0.030

Cold Drawing Round Bar

Size mm	Tolerance mm	Straightness mm/m	Ovality mm
Φ2.0-Φ4.0	±0.01	≤0.50	≤0.01
Φ4.1-Φ6.0	±0.015	≤0.70	≤0.015
Φ6.1-Φ13.0	±0.02	≤0.70	≤0.02
Φ13.1-Φ18.0	±0.025	≤0.70	≤0.025
Φ18.1-Φ25.0	±0.030	≤0.70	≤0.03
Φ25.1-Φ50.0	±0.05	≤0.70	≤0.05

Centerless Grinding Round Bar (Annealing condition)

Size mm	Tolerance mm	Straightness mm/m	Ovality mm
Φ2.0-Φ4.0	±0.01	≤0.50	≤0.01
Φ4.1-Φ6.0	±0.01	≤0.50	≤0.01
Φ6.1-Φ13	±0.01	≤0.50	≤0.01
Φ13.1-Φ18.0	±0.015	≤0.50	≤0.015
Φ18.1-Φ25.0	±0.015	≤0.50	≤0.015
Φ25.1-Φ35.0	±0.02	≤0.50	≤0.02
Φ35.1-Φ50.0	±0.03	≤0.50	≤0.03

Centerless Grinding Round Bar (Pre-hardened condition)

Size mm	Tolerance mm	Straightness mm/m	Ovality mm
Φ1.5-Φ4.0	±0.01	≤0.50	≤0.01
Φ4.1-Φ6.0	±0.01	≤0.50	≤0.010
Φ6.1-Φ13.0	±0.01	≤0.50	≤0.01
Φ13.1-Φ18.0	±0.015	≤0.50	≤0.015
Φ18.1-Φ25.0	±0.015	≤0.50	≤0.015
Φ25.1-Φ35.0	±0.02	≤0.50	≤0.02
Φ35.1-Φ50.0	±0.03	≤0.50	≤0.03

Peeling Round Bar

Size mm	Tolerance mm	Straightness mm/m	Ovality mm
Φ5.0-Φ13.0	±0.04	≤0.60	≤0.04
Φ13.1-Φ20.0	±0.04	≤0.70	≤0.04
Φ20.1-Φ35.0	±0.5	≤0.70	≤0.05
Φ35.1-Φ60.0	±0.06	≤0.80	≤0.06
Φ60.1-Φ80.0	±0.07	≤0.80	≤0.07
Φ80.1-Φ120.0	±0.08	≤1.00	≤0.08