Aisi 12l14 Steel Round Bar Sheet Plate Jis Sum24l Din 1 0718 - China

AISI 12L14 has great machinability and is suitable for case hardening and electroplating.

It also is called automatic machine tool processing steel.

It is used for machining automation and production line.

It is mainly used for small force and strict requirements on size and finish tools, such as watch parts, automobiles, machine tools and etc.

It has different names in different countries.

People also call it as JIS SUM24L and DIN 1.0718 steel.

12L14 Steel round bar sheet plate properties and chemical composition as below.

1.0718 Steel Characteristics

1.12L14 steel can be machined with higher cutting speeds and larger depths of cut.

2 - Adding free-cutting elements to get great cutting performance.

3 - It is extremely easy to cut on a lathe, increasing tool life and productivity by 40%.

4 - Cutting and process are very easy.

The processing efficiency gets better than general steel.

12L14 Steel Round Bar Sheet Plate Heat Treatment

Annealing Heat to 890℃ – 920℃ hold until temperature is uniform throughout the section, and cool in furnace.

Carburizing Pack, salt or gas carburize at 900℃ holding for sufficient time to develop the required case depth and carbon content, followed by a suitable refining/hardening and tempering cycle to optimize case and core properties.

Core Refinea Slow cool from carburizing temperature and re-heat to 880℃ – 900℃, hold until temperature is uniform throughout the section and quench as required in oil, water.

Case Hardening Following core refining, re-heat to 760℃ – 790℃, hold until temperature is uniform throughout the section and quench in water.

Temper immediately while still hand warm.

Tempering – After Carburising, Core Refining and Case Hardening Re-heat 12L14 steel to 120℃ – 230℃, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section and cool in still air.

NB.

Tempering will improve the toughness of the case with only slight reduction in case hardness.

It will also reduce it’s susceptibility to grinding cracks.

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