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2016-03-25 10:38:23 Origin: Remark:0 Click:
OFFICIAL TEST REPORT - issued by TUV - SGS - BV
MATERIAL CATEGORY - hot work alloy tool steel
MATERIAL SPECIFICATIONS - ISO 4957 - 1999
MAIN CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (%): 0.57 ~ 0.63
Silicon, Si (%): 0.20 ~ 0.50
Manganese, Mn (%): 0.70 ~ 0.90
Phosphorus, P (%) ≤: 0.030
Sulfur, S (%) ≤: 0.030
Chromium, Cr (%): 4.30 ~ 4.70
Molybdenum, Mo (%): 0.40 ~ 0.60
Vanadium, V (%): 0.20 ~ 0.30
Hardness after annealing, ≤ HBW : 240
Quenching temperature ℃ ±10℃ : 950 ~ 980
This alloy is generally smelt in electric arc furnace (EAF + VD + LF / BEF Electroslag remelting (ESR). For a purpose of higher quality, it should be smelt via technology of vacuum refining.
Alloy tool steel is widely used to produce the cutting tool, cold/heat distortion mould and measuring implements, and further to manufacture the piston, valve, valve seat of fuel pump of diesel engine.
Cutlery for medical equipments.
Cutting tools, Mechanical parts, Air hammer tools, Piercing tools.
The preheating of measuring and cutting tool steel is spheroidizing annealing, final heat treatment is quenching + low temperature tempering and hardness after heat treatment can reach 60~65HRC. When heat treat tool steel grades consideration should be given to hardening temperature, including ratio of heating, cooling and soaking times which will differ due to factors such as the shape and size of each chemical component. Other considerations during heat treatment include the type of furnace, quenching medium and work piece transfer facilities.
Hot-work die divides into several main types, such as hammer forging, die forging, extrusion and die casting, including hot forging die, press machine forging die, stamping die, hot-extrusion die, metal die-casting mould. Heat distortion mould not only supports huge mechanical stress, but also thermal stress during working repeatedly. Hot-work die steel should have not only high hardness, red hardness, abrasion resistance, toughness, but also have excellent high temperature strength, thermal fatigue stability, thermal conductivity, upper hardenability for guaranteeing the whole cross section with consistent mechanical property.
Round bar & Disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 6mm to 600mm
Length: random length, fixed length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T60 - 400mm X W10 - 1200mm X L1000 - 5000mm
Forging piece: stepped shafts, and other different shapes based on OEM.
If you meet further on any technical enquiry, pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
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