SCM435 has high static strength, impact toughness and high fatigue limit, higher hardenability than 40Cr, high creep strength and durable strength at high temperature, long-term working temperature can reach 500℃;  [TJC STEEL]Cold deformation plastic medium, poor weldability.  Important structural parts used for working under high load, such as transmission parts of vehicles and engines;  Turbine generator rotor, spindle, heavy load transmission shaft, large section parts.  

 

 

Species  

Alloy Structural Steel: SCM435  

Implementation Standard: JIS G4053-2008  

 

Chemical Composition of SCM435  

C: 0.33 ~ 0.38 Si: 0.15 ~ 0.35  

Manganese Mn: 0.60 ~ 0.90  

Sulfur S: Allowable [TJC STEEL]residual content ≤0.030  

Phosphorus P: Allowable residual content ≤0.030  

Cr: 0.90 ~ 1.20  

Nickel Ni: Permissible residual content ≤0.25  

Cu Cu: Permissible residual content ≤0.30  

Mo: 0.15 ~ 0.30  

 

SCM435 Standard  

SCM435 standard :SCM435 [TJC STEEL]is the Japanese standard (JIS G4053-2008) steel, the domestic corresponding steel 35CrMo  

 

SCM435 Hardness  

The hardness of SCM435 is HRC36 ~ 43, HB269 ~ 341  

 

Mechanical Properties of SCM435 

Tensile Strength (MPa) : ≥985(100)  

Yield Strength σs (MPa) : ≥835(85)  

Elongation δ5 (%) : ≥12  

Section Shrinkage rate ψ (%) : ≥45  

Impact Energy Akv (J) : ≥63  

Impact Toughness αkv (J/cm²)  A: 78 (8) or  

Hardness: 229 hb or less  

Sample Size: [TJC STEEL]sample blank size is 25mm  

 

Heat Treatment Specification  

Heat Treatment Specification: quenching 850℃, oil cooling;  Tempering 550℃, water cooling, oil cooling.  

Delivery Status: heat treatment (normalizing, annealing or high temperature tempering) or no heat treatment, delivery [TJC STEEL]status should be indicated in the contract.  Annealing no.1 "annealing at 760±10℃, furnace cooling to 400℃ air cooling.  

HB220-230  

860±10℃ normalize, air cooling out of the oven.  

Quenching water or oil (depending on the complexity of product type), 680-700 degrees tempering.  HB<217  

Quenching oil at 840±10℃ and then tempering at 470 ℃.  HRC41-45  

Quenching oil at 840±10℃ and then tempering at 480 ℃.  HRC35-45  

Tempering +tempering No.8 quenching oil at 850℃ and tempering at 510 ℃.  HRC38-42  

Tempering +tempering No.9 quenching oil at 850℃ and then tempering at 500 ℃.  HRC40-43  

Tempering +tempering [TJC STEEL]No.10 quenching oil at 850℃ and tempering at 510℃.  HRC36-42  

Quenching oil at 850℃ and then tempering at 560℃.  HRC32-36  

Oil quenching at 860℃ and tempering at 390 ℃.  HRC48-52