Hot Rolled O1 / 1.2510 / SKS3 Precision Ground Steel Flat Bar Cold Work Tool Ste

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AISI O1 / DIN 1.2510 / JIS SKS3 Precision Ground Steel Flat Bars , Cold Work Tool Steel , Special Steel - - - - Steel Grade: | O1 / 1.2510 / SKS3 | Application: | Tool Steel, Mold Steel | Shape: | Flat bar | Standard: | AISI, DIN, JIS, GB | Dimension: | 10-120 x 20-810 mm | Surface: | Milled+Grinded | Technique: | Hot rolled | Ultrasonic Test: | 100% UT Passed | - - - - Description: Equivalence - - - - AISI / SAE | DIN / W.Nr | JIS | GB | O1 | 1.2510 | SKS3 | 9CrWMn CrWMn | - - - - Chemical Composition (%) - - - - Steel Grade | C | Si | Mn | P | S | Cr | W | V | O1 | 0.85 1.00 | 0.10 0.50 | 1.00 1.40 | 0.030 | 0.030 | 0.40 0.70 | 0.40 0.60 | 0.30 | 1.2510 | 0.90 1.05 | 0.15 0.35 | 1.00 1.20 | 0.030 | 0.030 | 0.50 0.70 | 0.50 0.70 | 0.05 0.15 | SKS3 | 0.90 1.00 | 0.35 | 0.90 1.20 | 0.030 | 0.030 | 0.50 1.00 | 0.50 1.00 | ---- | - - - - Dimensions - - - - Thickness (mm) | Width (mm) | Length (mm) | 10-120 | 20-810 | 500 / 1000 Or as customized | ** We do machining as your required sizes | - - - - Delivery Condition EAF+LF+VD, Hot rolled, Spheroidizing Annealed, Hardness235HB, Milled + Grinded withhigh precision, UT 100% Passed Appearance - - - - Surface and Dimensions acc. To the standard DIN59350 | With Machining Allowance | Without Machining Allowance | Thickness Tolerance | +0.20mm / -0mm | +0.05mm / -0mm | Width Tolerance | +0.20mm / -0mm | +0.10mm / -0mm | Length Tolerance | +5mm / -0mm | +5mm / -0mm | Flatness | 300mm : 0.1mm | 300mm : 0.1mm | Surface Roughness | Ra6m | Ra1.6m | - - - - Characteristics 1. A kind of low-alloy cold work tool steel 2. With certain hardenability and wear resistance, homogenous and small particle carbides. Applications Typical applications for O1 tool steel are blanking, forming, and trim dies, gages, slitting cutters, punches, bolster dies, knock-out pins, thread roll dies, bending dies, plastic mold dies, shims, cams, machine ways, stamps, machine parts, jigs, cutter templates, swaging dies, etc. Forging Technique - - - - Heat Temperature | Start Forging Temperature | Finish Forging Temperature | Cooling Method | 1150 - 1200 C | 1100 - 1150 C | 920 C | Slow cooling | - - - - Heat Treatment - - - - Annealing | - - - - The recommended annealing practice is to use controlled-atmosphere furnaces. If these are not available, pack-anneal in an inert material. For a quick annealing cycle to develop fair machining properties, heat slowly to 1375 to 1425F. and cool slowly in the furnace. To develop the lowest hardness and best spheroidization for optimum machinability, heat slowly to 1450F. and furnace cool at 20 degrees per hour to 900F. The piece may then be removed from the furnace and cooled in air. Hardness after this cycle will be Brinell 202 max. - - - - Stress relieving | - - - - When desirable to relieve the strains of machining, heat slowly to 1050-1250F, allow to equalize, and then cool in still air (Strain Relieving).The recommended annealing practice is to use controlled-atmosphere furnaces. If these are not available, pack-anneal in an inert material. For a quick annealing cycle to develop fair machining properties, heat slowly to 1375 to 1425F. and cool slowly in the furnace. To develop the lowest hardness and best spheroidization for optimum machinability, heat slowly to 1450F. and furnace cool at 20 degrees per hour to 900F. The piece may then be removed from the furnace and cooled in air. Hardness after this cycle will be Brinell 202 max. - - - - Hardening | - - - - After thorough prhe hardening furnace, operating from 1450-1500F, depending on the size of the part.Warm slightly before charging into the preheat furnace, which should be operating at about 1100-1200F. - - - - Tempering | - - - - O1 is generally tempered in the range of 300-600F. Tempering temperatures and resulting Rockwell C hardness, based on a 1 inch round samples oil quenched from 1475F and tempered for 2 hours, are as follows: - - - - Tempering Temperature F | Rockwell C | 300 | 65 | 350 | 63 | 400 | 62.5 | 450 | 61 | 500 | 60 | 600 | 57 | - - - - What we can offer? We offer a wide range of steel products in a wide variety of dimensions and executions, acc.to the common international specifications or customerized. Machining and heat treatment are available. Also, we advise you in choosing the right materials. -- 50,000 tons Stock -- 7 warehouses and branches -- 47 sets of vertical band saws -- 100 sets of mod

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Ningbo Ningshing Special-Steel Group Co., Ltd.

Ms. Elle Wang

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