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O1 1.2510 SKS3

>lọ>ngwaahịa>Ngwá Ọrụ Ngwá Ọrụ Nzuzo>O1 1.2510 SKS3

Cold Working Tool Steel O1 1.2510 SKS3 flat bar

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O1 steel also is called DIN 1.2510 and JIS SKS3 steel. High content for manganese, chromium and tungsten in 1.2510 steel composition, that could increase the hardening ability. Then the steel does not need to undergo water quenching. After oil cooling and quenching, the hardness could reach 62HRC. O1 tool steel round bar sheet plate was used widely as a cold work mold steel. It is a great material for the blade, metal molds and etc.


Where greater dimensional stability in heat treatment or improved wear resistance is required, tool steels with higher alloy contents, such as A2 or D2 should be considered. Typical applications for O1 tool steel are Blanking Dies, Drawing Dies, Extrusion Dies, Form Cutters, Forming Dies, Gauges-Special, Lamination Dies, Master Tools, Molding Dies, Paper Knives, Precision Tools, Punches, Reamers, Roll Threading Dies, Screw Dies, Sub-Press Dies, Taps Trimming Dies, etc.





Heat Treatment Response
Air Cooled fromHRC
1425F(774︒C),30 minutes62
1450F(788︒C),30 minutes64
1475F(802︒C),30 minutes65
1500F(816︒C),30 minutes65
1600F(871︒C),30 minutes64

Ntuziaka ọgwụgwọ okpomọkụ


Okpomọkụ dị oke egwu:
Ac1: 1350°F(732℃)Ac3: 1440°F(760℃)
AR1: 1295°F (703 ℃)AR3: 1240°F (671 ℃)

Na-ekpo ọkụ: Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1200-1300°F (649-704°C) and equalize.

Austenitizing (High Heat): Heat slowly from the preheat to 1475-1500°F (802-816C)

Soak for 30 minutes for the first inch (25.4 mm) of thickness, plus 15 minutes for each additional inch (25.4 mm).

Na-emenyụ: Oil quench to a temperature no lower than 150-125°F (66-51°C).

Note: O1 is somewhat prone to quench cracking, especially if there are significant changes in section thickness and sharp internal corners. 

The oil quenching should be performed so that the heat removal is as uniform as possible in all areas of the part being quenched. 

Be sure to remove the part from the oil before the temperature drops to ambient temperature. 

Hot oil at a temperature of 300 to 400°F (149-204°C) is recommended.

Na-ewe iwe: Temper immediately after quenching. Do not allow the part to cool below 125°F (51°C). The typical tempering range is 350 - 400°F (177 -204°C). 

Hold at temperature for 1 hour per inch (25.4 mm) of thickness, 2 hours minimum, then air cool to ambient temperature. 

To minimize internal stresses in cross sections greater than 3 inches (76.2 mm) and to improve stability in parts that will be EDM’d after heat treatment, 

a soaking time of 4 to 6 hours at the tempering temperature is strongly recommended.

Cryogenic Treatment: Refrigeration treatments should typically be performed after the temper, and must be followed by a second temper.


A ga-emerịrị mgbakasị ahụ mgbe arụchara ọrụ ọkụ na tupu ịmaliteghachi ike.

Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1425 -1450°F (802-816°C), and hold at temperature for 1 hour per inch (25.4mm) 

of maximum thickness; 2 hours minimum. Then cool slowly with the furnace at a rate not exceeding 50°F per hour (28°C per hour) to 1000°F (538°C). 

Continue cooling to ambient temperature in the furnace or in air. The resultant hardness should be a maximum of 212 HBW.

itemDimension (mm)usoroỌnọdụ nnyefe
Ewepụghị OgweT 3.0-20 XW 20-100Agbanyela ỌkụBlack elu & Mgbakwunye

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