SKH55
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Material technical specifications of JIS standards W-Mo series high speed tool steel JIS SKH55 data sheet,SKH55 Chemical compositions, SKH55 Mechanical properties from Steelmaking, ESR melted, Blooming, Hot forging, JIS SKH55 Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test, Cold working, Peeled or rough turned machining. Technical specification - JIS 4403 2006. 100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
TECHNICAL DATA SHEET: JIS SKH55
MATERIAL CATEGORY: Tungsten-molybdenum series high speed tool steel
MATERIAL SPECIFICATIONS: JIS G4403 - 2006.
OFFICIAL TEST REPORT: issued by TUV - SGS - BV
CHEMICAL COMPOSITIONS (WEIGHT - %)
C (％): 0.87 ~ 0.95
Si (％): ≤ 0.45
Mn (％): ≤ 0.40
P (％)≤: 0.030
S (％)≤: 0.030
Cr (％): 3.50 ~ 4.50
Mo (％): 4.70 ~ 5.20
W (％): 5.90 ~ 6.70
V (％): 1.70 ~ 2.10
Co (%): 4.50 ~ 5.00
HEAT TREATMENT PRACTICE AND HARDNESS
Hot working temperature /℃: 1180 ~ 950
Annealing temperature /℃: 800 ~ 880
Annealed hardness, ≤ HBW: 269
Quenching temperature /℃: 1210
Cooling medium: oil
Tempering temperature /℃: 560
Hardness after tempering ≥HRC: 64
APPLICATION FIELD
High speed steel is generally widely used in the field of machining at high speeds. With the excellent abrasion resistance, high temperature properties and excellent hardness, high speed steels (HSS) have become material a wide range of applications including cutting tools, such as drills, taps, milling cutters, tool bits, gear cutters, saw blades and rolls, such as hot strip mill finishing train, rod and bar mill finishing, universal mill finishing. High speed steels also found a market in fine hand tools where their relatively fine toughness at high hardness, coupled with high abrasion resistance, made them suitable for low speed applications requiring a durable edge, such as chisels, hand plane, blades, and high quality kitchen hardware, pocket knives, swords.
MELTING PROCESS
This alloy is generally smelt in electric arc furnace (EAF ), IFF + LF + VD, LF + Electroslag remelting (ESR).
For a purpose of superior quality, it should be smelt via technology of vacuum refining or by agreement.
PRODUCT PROFILE AND AVAILABLE FORMS
Round bar (Diameter): 2.00 to 450mm
Square bar / Flat bar: 0.20 mm to 500mm
Wire rod (Diameter): 0.10 ~ 15mm
Length: random length, fixed length or based on the customer's special requirement.
Steel strip: T0.10 ~ 3mm X W10 ~ 1200mm X Coil
Heavy/middle plate via hot rolled: T0.50 - 200mm X W100- 500mm X L1000-12000mm
Other different shapes based on OEM.
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