H13 tool steel china supplier and stockholders. Otai Special steel is hot work h13 china supplier of in round bar, plate, flat bar, sheet, square and block. H13 steel is hot work tool steel equivalent with JIS SKD61, GB 4Cr5MoSiV1 and DIN 1.2344. it consists of  chromium,   molybdenum and vanadium and is known for its high hardenability and great toughness.

The molybdenum and vanadium act as strengthening agents while the chromium content helps the H-13 tool steel to withstand softening when used at high temperatures. It also combines shock and abrasion resistance, has good red hardness,  can resist rapid cooling and withstand premature heat checking. The H13 tool steel has good machinability, good weldability and good ductility and it can be formed by conventional means.   So H13 tool steel applications is very range in hot forged mold, hot work tool.

Related Specifications ASTM A681-1999    H13 Tool Steel data files Down

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AISI H13 steel Chemical composition and equivalent steel grade compare

 

Grade	C	Si	Mn	P	S	Cr	Mo	V
H13	0.32~0.45	0.80~1.20	0.20~0.50	0.030Max	0.030Max	4.75~5.50	1.10~1.75	0.80~1.20
SKD61	0.35~0.42	0.80~1.20	0.25~0.50	0.030Max	0.020Max	4.80~5.50	1.00~1.50	0.80~1.15
4Cr5MoSiV1	0.32~0.42	0.80~1.20	0.20~0.50	0.030Max	0.030Max	4.75~5.50	1.10~1.75	0.80~1.20
STD61	0.32~0.42	0.80~1.20	≤0.50	0.030Max	0.030Max	4.50~5.50	1.00~1.50	0.80~1.20
X40CrMoV5-1	0.36~0.44	0.80~1.20	0.20~0.50	0.030Max	0.030Max	4.80~5.50	1.20~1.50	0.85~1.15

 

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Form of Supply

we can supply the h13 round bar, flat bar, plate and square block. round bar can be sawn to your required lengths as one offs or multiple cut pieces. Steel plate and sheet rectangular pieces can be sawn from flat bar ,sheet or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

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Applications

H-13 Tool Steel is used in hot forging dies,inserts, hot gripper dies, hot nut tools, hot header dies, brass forging and pressing dies, hot forging aluminum base dies, aluminum casting and extrusion dies, zinc die casting dies, extrusion mandrels, plastic molds, cores, die holder blocks, hot press dies, hot work punches, etc.

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Forging

first slowly Preheat to 750°C(1382°F), soak enough, then rapidly heat the H13 to 1050-1100 °C(1922-2030°F). then start forging, ensure the forging temperature higher than 850°C(1562°F).  Cool must be slowly after H13 steel forging finished.

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Annealing

Heat H13 to 840-860°C(1544-1580°F), Soak thoroughly before furnace cool at a maximum rate of 20°C(68°F) / hour, Cool down to 600°C (1112°F). Then cool H13 tool steel in air.

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Stress Relieving

Befor make products, The Tool steel stress relieving is very necessary.  When H13 tool steel is ground , heavily machined, cutting,milled , the relief of internal strains is necessary before hardening to minimise the possibility of distortion. for stress relieving, heat the H13 tool steel component to 700°C(1292°F) carefully, Get  enough soaking period . Then cool in the furnace or cool in air.

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Hardening

Hardening the H13 steel, first should preheat the H13 steel parts to 780-820°C(1436-1508°F), Soak enough time, ensure soak thoroughly. then rapidly heat to 1000-1030°C(1832-1886°F), soak about 30 mins. cool in air or oil.

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Tempering

Heat the H13 tool steel parts to tempering temperature, soak enough time until to Soak thoroughly.  The usual tempering temperature range is 400-650°C(752-1202°F), It depend on the tools hardness require and the operating temperature.  H13 tool steel tempering data for your reference as below:

Temperature [°C]	400	500	550	600	650
Hardness [HRc]	54	56	54	49	47

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Nitriding

On some special tool require,  the higher hardness is required.  Nitriding the H13 tool steel can get a hard surface case. after Nitriding , the H13 tool steel will  have a resistant to wear and erosion surface. Typical Nitriding data for your reference as below:

Temperature	Time	Approx. Surface Depth
525°C	10 hours	0.125mm
525°C	20 hours	0.180mm
525°C	40 hours	0.250mm
525°C	60 hours	0.300mm

 

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Heat Treatment

H13 tool steel heat treatment, including heat treat temperature, rate of heating, cooling and soaking times. they depend on the h13 steel parts size and shape and your local Climatic conditions. So if can,  we advise you contact your heat treatment provider get full guidance on heat treatment.

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Final Grinding

For get bright surface and precise dimension, Usual the H13 tool steel need grinding. If dry grinding, use a very soft wheel grinding is better.

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H13 Regular size and Tolerance

Round: diameter 5–1400mm

Plate:  thickness 5-1400mm

Others have not specified size, pls contact our experienced sales team.

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Processing

Steel round bar and flat sections can be cut to your required sizes. H13 steel ground bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. H13 is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.

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Contact our experienced sales team to help you with your H13 tool steel questions and inquiry by Email or Telphone.  The questions and inquiry will be reply in 24 hours.