Gb 30cr Steel Bars High Temperature Resistance Advantage - China

GB 30Cr steel bars are a high-quality alloy structural steel (classified as chromium steel).

Due to its chromium (Cr) content, they offer superior wear resistance, hardenability, and high-temperature performance compared to ordinary carbon structural steels.

After appropriate heat treatment (quenching and tempering, surface hardening, carburizing, or nitriding), they exhibit certain advantages in high-temperature resistance.

???? High-Temperature Advantages of GB 30Cr Steel Bars

1 - The Role of Chromium

* Chromium improves the steel's oxidation resistance and corrosion resistance at high temperatures;

* It enables 30Cr steel to maintain good hardness and strength at medium and high temperatures, slowing softening.

2 - High Thermal Strength

* After quenching and tempering, GB 30Cr steel bars have excellent tempering stability and can maintain their mechanical properties at medium and high temperatures (generally in the 300–500°C range) without rapid annealing softening.

**High-Temperature Advantages in Applications**

* Widely used in mechanical components such as gears, shafts, bolts, connecting rods, and crankshafts operating in medium- to high-temperature environments;

* In applications such as petrochemical equipment and power machinery, it ensures reliable operation of parts under high-temperature stress.

✅ In summary, the high-temperature resistance of GB 30Cr steel bar primarily stems from the oxidation resistance, tempering stability, and wear resistance imparted by chromium.

This allows it to maintain high strength and toughness even in high-temperature environments of 300–500°C**, making it widely used in critical mechanical components that must withstand thermal stress and friction.

Songshun Steel

Our main products include tool steel, stainless steel, spring steel, bearing steel, and other types.

Other types include steel round bar, steel sheet, steel plate, and steel coil, among others.

Company Contact:

• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 0086 0769 85475596

• Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , GuangDong , China

• Email:

• Website: https://songshunsteel.com/

• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
  After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter.
  
  Combined with experienced exporting team and professional technical knowledge, Songshun Steel offers both technical advice and support, as well as global professional steel solution and service.
  
  Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on.
  
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