Pro Grinded / Peeled High Speed Tool Steel , JIS SKH51 Steel Round BarsSpecification:JIS SKH51 High Speed Tool Steel Round Bars , HSS for Punching , Forming , Pressing
|Steel Grade:||SKH51||Application:||High Speed Steel, Tool Steel|
|Shape:||Round bar||Standard:||AISI, DIN, JIS, GB|
|Dimension:||Φ6.5 - 250 mm||Surface:||Black, Peeled, Turned, Grinded|
|Technique:||Hot rolled, Forged||Ultrasonic Test:||100% UT Passed| Chemical Composition (%)
|AISI / SAE||DIN / W.Nr||JIS||GB|
CharacteristicsTungsten-molybdenum high speed steel with excellent toughness and cutting properties,for a wide variety of uses.Heat Treatment770 to 840°C (1418 to 1544°F)Slow controlled cooling in furnace at a rate of 10 to 20°C/hr (50 to 68°F/hr) down to. 600°C (1112°F), further cooling in air.Hardness after annealing: max. 280 HB. 600 to 650°C (1112 to 1202°F)Slow cooling in furnace; intended to relieve stresses set up by extensive machining,or in complex shapes.After through heating, hold in neutral atmosphere for 1 - 2 hours. 1190 to 1230°C (2174 to 2246°F)Oil, salt bath (500 to 550°C (932 to 1022°F), vacuum.Upper temperature range for parts of simple shape, lower for parts of complex shape.For cold working tools also lower temperatures are of importance for higher toughness. Soaking time after heating up the whole section of a work piece 80 seconds minimumis required for dissolving sufficient carbides.Maximum soaking time 150 seconds to avoid detriments by over soaking.In practice instead of soaking time the time of exposure from placing the work piece intothe salth bath after preheating until removing (including the stages of heating to the specified surface temperature and of heating to the temperature throughout the whole section) is used. Vacuum hardening is also possible. The time in the vacuum furnace depends on therelevant work piece size and furnace parameters. Slow heating to tempering temperature immediately after hardening/time in furnace:1 hour for every 20 mm of work piece thickness, but not less than 2 hours/ air cooling(minimum holding time: 1 hour).1st tem pe ring and 2nd tempering to de sired working hardness.Average obtainable hardness values are shown in the tempering chart.3rd tempering for stress relieving, 30 - 50°C (86-122°F) be low highest tempering temperature.Obtainable hardness after tempering: 64 - 66 HRC.
| ||Hot Rolled||Forged|
ApplicationsJIS SKH51 is suitable for cold work applications, for example tools for punching, formingand pressing, etc.. SKH51 possesses an admirable combination of wear resistance,toughness and compressive strength. This combination of properties makes it superiorto many high alloyed cold work steels.Quality Assurance
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ETCompany information:
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, military, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
steel round bar
steel flat bar
steel square bar
steel pipe/tube ( welded or seamless )
steel round pipes
steel square pipes
steel welded tubes
steel seamless tubes
Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Nuclear power steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel FAQ:
Q: Are you a manufacturer or merely a trader?A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
Q: Delivery time?A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q: What is the payment term?A: T/T or L/C.
Q: Can you provide a sample for our testing before confirming the order?A: Yes. We can provide sample to you for approval before you place an order to us. Free sample is available if we have stock.
Q: Can we visit your company and factory?A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come. Customer visiting :
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