40Cr4
2025-12-13 15:57:00   Origin：   Remark：0 Click：

TECHNICAL DATA SHEET - 40Cr4

Material category - 1.1% Cr-base Structural Alloy Steel

Material specifications - IS 1570 - 4 (1988 / 2018 ) 

Special melting process - EAF + VD + LF / BEF + ESR

TYPICAL CHEMICAL COMPOSITION (mass weight %)

Carbon, C (％): 0.35 ~ 0.45
Silicon, Si (％): 0.10 ~ 0.35
Manganese, Mn (％): 0.60 ~ 0.90
Phosphorus, P (％): ≤ 0.035
Sulfur, S (％): ≤ 0.025
Chromium, Cr (％): 0.90 ~ 1.20
Nickel, Ni (％): -
Molybdenum, Mo (%):  -
Ferrum, Fe (%):  balance

MECHANICAL PROPERTIES - HEAT TREATMENT CYCLE
Hot working tenperature / ℃:  1100 ~ 850
Annealing temperature / ℃:  650 ~ 700
Quenching temperature / ℃:  820 ~ 850
Cooling medium: oil
Common tempering temperature /℃:  540 ~ 680
Forms: Round bar, flat bar, forgings and plate
Tensile strength, σb ≥ MPa:  690
Yield strength, σ0.2 / MPa:  490
Elongation, δ5 ≥ (％):  14.0
Reduction of area, ф ≥ (％):  -
Hardness via heat treatment /HBW:  248 max.

SUPERIOR SERVICE & PRODUCT PROFILE
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
Round bar / disc (diameter): 6.0 to 910 mm
Flat bar (thickness X width): 10 ~ 350 * 15 ~ 550 * L mm
Heavy plate (thickness X width): 20 ~ 500 * 30 ~ 1200 * L mm
Length: fixed length, random length or based on the customer's special requirement.

TECHNICAL SALES ASSISTANCE
20+ years Focus On Special Steel Manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.

If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.