precision forging SCM430 alloy steel forgings

precision forging SCM430 alloy steel forgings

SCM430 is an alloy structural steel that complies with the JIS G4053-2003 standard.

Chinese name SCM430

Grade SCM430

Material name Alloy structural steel

Corresponding domestic grade 30CrMo

Standard JIS G4053-2003

Corresponding German grade: 34CrMo4 (1.7220)

Standard: JIS G4053-2003

●Chemical composition:

Carbon C: 0.28～0.33

Silicon Si: 0.15～0.35

Manganese Mn: 0.60～0.90

Sulfur S: Allowable residual content ≤0.030

Phosphorus P: Allowable residual content ≤0.030

Chromium Cr: 0.90～1.20

Nickel Ni: Allowable residual content ≤0.25

Copper Cu: Allowable residual content ≤0.30

Molybdenum Mo: 0.15～0.30

●Mechanical properties:

Tensile strength σb (MPa): ≥930(95)

Yield strength σs (MPa): ≥785(80)

Elongation δ5 (%): ≥12

Shrinkage ψ (%): ≥50

Impact energy Akv (J): ≥63

Impact toughness αkv (J/cm²): ≥78(8)

Hardness: ≤229HB

Specimen size: The specimen blank size is 25mm

●Heat treatment specification and metallographic structure:

Heat treatment specification: Quenching 880℃, water cooling, oil cooling; tempering 540℃, water cooling, oil cooling.

●Delivery status: Delivery in heat treatment (normalizing, annealing or high temperature tempering) or non-heat treatment state, the delivery status should be indicated in the contract.

Company introduction:

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. was established in 1997. It is a professional manufacturer of blank forgings engaged in manufacturing and processing automotive parts, marine gearbox accessories, and engineering machinery accessories. The company can forge copper alloy, titanium alloy, aluminum alloy, carbon steel, stainless steel, high temperature alloy and other materials. The company covers an area of ​​more than 10,000 square meters, with a standard factory building of 5,000 square meters. It has a complete set of advanced production technology and equipment from mold design, development, parts manufacturing and processing. It has multiple die forging production lines mainly based on 4000T, 2500T, 1600T, 1000T, and multiple auxiliary production lines. The annual output is 15,000 tons. It is exported to more than 20 countries and regions including Germany, the United States, the United Kingdom, France, Russia, etc.