China Round Steel Steel Bar tool steel

EN31/SAE52100/GCR15 Alloy Bearing Steel round barPerform Standard: GB/T 3077-1999Chemical Compostion:CSiMnCrMoPSNi0.38~0.450.17~0.370.60~0.900.90~1.200.15-0.25≤0.018≤0.030≤0.012
Mechanical Properties:
Tensile strength:σb (MPa):≥1080(110)
Yield stStencil rength:σs (MPa):≥930(95)
Elongation:δ5 (%):≥12
Section shrinkage:ψ (%):≥45
Impact work:Akv (J):≥63
Impact toughness value:αkv (J/cm²):≥78(8)
Hardeness:≤217HBAnnealed Hardness
Hot rolled, black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.Delivery state:
Forging parts produced with continuous casting and electro-slag re-melting process; Rolled as annealed, bright and quenched/tempered steel bars.Feature
1) Weldability suffers with increasing chromium content;
2) High temperature strength and high pressure hydrogenation properties are promoted by chromium and molybdenum;
3) Molybdenum significantly reduces temper brittleness;
4) Chromium renders steel oil hardenable and increase hardenability;
5) Chromium molybdenum high tensile steel with yield strength of 550N/mm2;
Listed specificationManufacturing Equipment for Electrical & Electroni s are only typical grades; products of required specifications can be developed/produced per international, chinese or industry standards, or based on agreements with customers.
Application
It used for section large forgings, such as locomotive traction gears, with supercharger drive gear, the rear axle, the connecting rod and the spring load greatly clip,oil drill pipSecurity Guard e joints and fishing tools,etc.
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Company Profile
Guangzhou Changfeng Steel Co.,LTTelecommunication & Broadcasting D is an export agent company of Baosteel Group special steel products, which mainly sells plastic die steel, hot work die steel, cold work die steel, alloy structural steel, bearing steel, tool steel, stainless teel, carbon steel, etc. We also act on behalf of exporting steels of mainly steel factories in China, including Shagang group, Wenfeng group, Xingcheng group, Dongte group, Daye and so on. Changfeng is full of export experience to the market all over the world, such as America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.
Changfeng has a lot of experienced and competent elites and is capable of offering the best service after years of development. Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machResonator ines and other advanced equipments to provide customers with cutting and other processing services. Our all products should be inspected the metallographic analysis,hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI,JIS and GB to ensure their function and quality.
Changfeng keeps the principle of " sincerely cooperation, endless striving for perfection" to establish long-term and win-win relationship with importers all over the world.Production Line
Quality Inspection
Warehouse
Our service
We provide quality special steel for all industries.
Orders of any size, any length, shipped fast
We carry a unique inventory of specialty special steel
Provide related value-adding services :
metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.
Sawing for small or large quantities, sawing-to-size.
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