H13 round bar

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Introduction to H13

H13 is a hot mold steel, with high harden ability characteristic and heat resistance,, the steel contains high content of carbon and vanadium, good wear resistance, relatively weakened toughness, with good heat resistance, good strength and hardness, high wear resistance toughness, excellent comprehensive mechanical properties and high tempering stability.


For the manufacture of forging mold with large impact load, hot extrusion mold, precise forging die; aluminum, copper and its alloy die casting die.

Chemical composition

H13 Similar as 1.2344

 %   C  Mn  Si   S   P  Cr   V  Mo
MIN 0.32 0.20 0.80 4.75 0.80 1.10
MAX 0.45 0.50 1.20 0.030 0.030 5.50 1.20 1.75

Heat treatment

Hardness for factory statusHBS≤235

Hardness after quenching 51-52HRC

Heat-treatment process:

Quenching: 790 degrees ± 15 ° preheat

Heat at 1000 degrees (salt bath) or 1010 degrees (furnace controlled atmosphere) ± 6 degrees

Heat preservation for 5~15min and air cooling

Tempering: 550 ° ± 6 degrees tempering annealing, heat processing;


round bar,  diameter 20 -500mm  length 3000-8000mm   (photo)

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  • The use and maintain of the sawblade

    ◎ The carbide tip of sawblade is very sharp, so process of using must be prevent the carbide tip.

    ◎ PeriodicaI cleaning and support the machine,the spindle’s running tolerance must be less than h7.

    ◎ The flanges must be parallel to each other,must be of the same diameter 1/3 of the sawblade’s diameter(formuIti—rip saw blade is 1/2.

    ◎ When instaIIion the sawbIade,it shaII be 5-6 teeth higher than board surface.

    ◎ Before operation,check the firmly of the sawblade,be sure nobody in front of the machine. Do not feed of operation check whether the machine is good for operaiton. Periodical check the function of the machine,the certicaI jump is less than ±0.02MM,and the flap is less than ±0.01.

    ◎ After continuous use,must be removed and cleaning the sawblade,get rid of the resin and sawdust of the sawblade of both sides.Other wise it would beinfluence the effect of using the sawblade.

    ◎ Deposit of the sawblade,must not be layer the sawblade,it is putted in the originaI package inside.

    The renovate of the sawbIade

    ◎ The renovate of the carbide sawblade While it no longer sharpen and the horizontaI piece coarseaess. The power of using sawblade machine obviously Increase. When process materiaI,the materiaI appearred burst. The carbide tip exhaust more than 0.02MM.

    ◎ For the renovate the sawblade,it shouId be grinding by the a formal company, so be sure the quality of the sawblade after renovating.