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34Cr4 Alloy Steel- SCALE STEEL.

9/15/2022

 
34Cr4 alloy steel is mainly used in manufacture of mechanical parts under medium load and medium speed work after quenched [SCALE STEEL]and tempered treatment.
 
34Cr4 Alloy Steel’s Standard: EN 10083/1991;
Chinese Equivalent Grade with 34Cr4 Alloy Steel: 35Cr;
Japanese Equivalent Grade with 34Cr4 Alloy Steel:SCr435;
American Equivalent Grade with 34Cr4 Alloy Steel: 5135;
British Equivalent Grade with [SCALE STEEL]34Cr4 Alloy Steel: 530A36;
French Equivalent Grade with 34Cr4 Alloy Steel: 38C4;
 
Chemical Composition for 34Cr4 Alloy Steel(%):
C: 0.30 ~ 0.37 Si: ≤0.40
Manganese: 0.60 ~ 0.90
Sulfur S: allowable residual[SCALE STEEL] content ≤0.035
Phosphorus P: allowable residual content ≤0.035
Chromium Cr: 0.90 ~ 1.20
Nickel Ni: allowable residual content ≤0.25
Copper Cu: allowable residual content ≤0.030
 
Mechanical Properties of 34Cr4 Alloy Steel:
Tensile strength σ B (MPa) : ≥930(95)
Yield strength σs (MPa) : ≥735(75)
Elongation δ5 (%) : ≥11
Section shrinkage ψ (%) : ≥45
Impact power Akv (J) : ≥47
Impact toughness [SCALE STEEL]value α kV (J/cm2) : ≥59(6)
Hardness: 207 hb or less
(Sample size: Sample blank size is 25mm)
 
34Cr4 Alloy Steel’s Heat treatment Specification and Metallographic Structure:
Heat treatment specification: [SCALE STEEL] quenched at 860℃, oil cooled; Temper 500℃, water cooled, oil cooled.
Delivery condition: Heat treatment (normalizing, annealing or high temperature tempering) or no heat treatment, delivery condition [SCALE STEEL]shall be indicated in the contract.
 
 
 

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