precision forging 735A30 alloy steel forgings

precision forging 735A30 alloy steel forgings

735A30 high-quality alloy structural steel

Description   735A30 has good comprehensive mechanical properties and process properties, good hardenability, good tempering resistance, high fatigue strength, working temperature can reach 500°C, good low-temperature impact toughness, low overheating and low decarburization tendency, good welding performance, usually used after quenching and medium-temperature tempering

Used to manufacture important parts with larger cross-sections that bear dynamic loads and high stress; also used for various springs with larger cross-sections, strong stress and working temperature below 210°C, such as internal combustion engine valve springs, fuel injector springs, boiler safety valve springs, car buffer springs, etc.

Range

—Customized forging 735A30 forgings, investment casting 735A30 castings, metal injection molding 735A30 and its products

735A30

Chemical composition

Carbon C: 0.46～0.54

Silicon Si: 0.17～0.37

Manganese Mn: 0.50～0.80

Sulfur S: ≤0.030

Phosphorus P: ≤0.030

Chromium Cr: 0.80～1.10

Nickel Ni: ≤0.35

Copper Cu: ≤0.25

Vanadium V: 0.10～0.20 [1]

Physical properties

Mechanical properties

(Note: The cross-sectional area of ​​the material has different mechanical properties under different conditions)

Elongation δ5 (%): ≥10

Shrinkage rate ψ (%): ≥40

Hardness

Hot rolling, ≤321HB; cold drawing + heat treatment, ≤321HB Heat treatment specifications and metallographic structure: Heat treatment specifications: quenching 850℃±20℃, oil cooling; tempering 500℃±50℃ (±30℃ when necessary).

Good mechanical properties and process properties, high hardenability, adding vanadium to refine the grain of steel, reduce overheating, improve strength and toughness, have high fatigue strength, high yield ratio, but poor weldability, low cold deformation plasticity.

735A30 Chinese name 50Cr, V tensile strength ≥1274(130)(MPa) Overview    It is a relatively spring yield strength ≥1127(115)(MPa)

Company Profile:

Qinhuangdao Zhongwei Precision Machinery Co., Ltd. was established in 1997. It is a professional manufacturer of rough 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.