Correct Astm H13 Quenching Temperature And Cooling Method For Long Die Life - China

ASTM H13 quenching temperature is the most important heat treatment parameter for this classic hot work tool steel.

Getting it wrong leads to grain coarsening, low toughness and early die failure, so every heat treater and mould maker should understand the correct range.

Correct ASTM H13 quenching temperature:

- Standard austenitizing range: 1020-1050 C (1870-1920 F)

- Common workshop setting: 1030 C for dies up to 300 mm thickness

- For maximum hot hardness: up to 1060 C, but only with controlled grain size

- Never exceed 1080 C, as grain coarsening sharply reduces toughness Preheating before the ASTM H13 quenching temperature:

- First preheat: 650 C, hold to equalize the core and surface

- Second preheat: 850 C, hold before the final austenitizing step

- Soaking time at quenching temperature: about 20-30 minutes per inch of section Cooling methods after austenitizing:

- Vacuum furnace with 5-6 bar nitrogen: the best choice, clean and low distortion

- Oil quenching: suitable for simpler shapes up to about 150 mm

- Interrupted quenching in salt bath at about 550 C followed by air cooling, for complex dies

- Air cooling works for thin sections but gives slightly lower hardness Tempering after quenching:

- Start tempering when the part reaches 50-70 C, never let it stand overnight

- Double temper at 550-620 C depending on the target hardness

- 600 C gives about 48-50 HRC, ideal for aluminium die casting dies

- Triple tempering is recommended for large blocks and ESR quality As quenched hardness at the correct ASTM H13 quenching temperature reaches 55-58 HRC, and final working hardness after double tempering is typically 44-52 HRC.

The vanadium and molybdenum carbides formed at this temperature range give H13 its famous resistance to heat checking and thermal fatigue.

Songshun supplies H13 in annealed, pre-hardened and heat treated conditions with EN 10204 3.1 certificates, and our engineers give free advice on quenching and tempering cycles.

Learn more at https: //songshunsteel.

com/

Company Contact:

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

• Phone: 076985475596

• 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.
  
  Songshun specialized in Special Steel for almost 20 years.
  
  We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.
  
  Welcome your contact 24 hours a day!!!
  
  Skype/Whatsapp/We chat: +86-18269260283
  
  Songshun Tiktok: mikizhuo
  
  Songshun Facebook: Songshun Steel
  
  Songshun YouTube: MiKi Zhuo
  
  songshunmoldsteel414 04340