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SCM420 alloy structure steel has high hardenability, no tempering brittleness, good weldability, little tendency to form cold[TJC STEEL] crack, good machinability and cold strain plasticity.
Corresponding to Domestic Grade Name: 20CrMo Corresponding to Germany Grade Name: 25 crmo4 (1.7218) Executive Standard:[TJC STEEL] JIS G4053-2003 Features and Scope of Application: SCM420 is generally used under the condition of quenching and tempering or carburizing. It is used to manufacture high-pressure pipes and various fasteners and advanced carburizing parts, such as gears and shafts, which work in non-corrosive media and medium with nitrogen and hydrogen mixture at [TJC STEEL]working temperature below 250℃. SCM420 Alloy Structural Steel Chemical Composition (unit %) : C: 0.18 ~ 0.23 Si: 0.15 ~ 0.35 Mn: 0.60 ~ 0.90 S: allowable residual content ≤0.030 P: allowable residual content ≤0.030 Cr: 0.90 ~ 1.20 Ni: allowable residual content ≤0.25 Cu: allowable residual content ≤0.30 Mo: 0.15 ~ 0.25 Mechanical Properties (Tempering and Tempering State) : Tensile Strength σb (MPa) : ≥885(90) Yield Strength σs (MPa) : ≥685(70) Elongation Δ5 (%) : ≥12 Section [TJC STEEL]Shrinkage ψ(%) : ≥50 Impact Work AKV (J) : ≥78 Impact Toughness Value α kV (J/ Cm&SUP 2;)A: 98 (10) or Hardness: 197 hb or less Heat Treatment Specification and Metallographic Structure: Heat Treatment [TJC STEEL]Specification: Quenching 880℃, water cooling, oil cooling;Tempering 500℃, water cooling, oil cooling. Delivery Status: Delivered under heat treatment (normalizing, annealing or high temperature tempering) or without heat treatment. The delivery status shall be specified in the contract. Comments are closed.
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EMAIL: [email protected]
HENAN SCALE IMP&EXP CO.,LTD
ZHENGZHOU ZHIYUAN IMP&EXP CO.,LTD
COPYRIGHT © 2015