Product : HSS SKH 51
Kategori : High Speed Steel (HSS)
Standard: JIS G 4403
Grades : SKH 51
Equivalent
ISORAPID S-600, AISI M2, Thyssenkrupp 3343, ASP23 ASSAB , YXM-1 Hitachi, Daido MH51, DIN HS6-5-2, EN 1.3554 LW, UNS T11302, ASTM A600
Characteristic
SKH51 (old symbol SKH9):
Has good machinability
Well-balanced abrasion resistance and toughness
Good surface treatment processing
Excellent overall hardenability
High compressive strength
Availability
Roundbar
Flat
Chemical Composition
| Type | C | Si | Mn | Cr | Mo | V | W | Co | P |
| S600 | 0.88 | 0.22 | 0.35 | 4.12 | 4.97 | 1.77 | 6.50 | - | 0.021 |
| SKH51 | 0.80-0.88 | 0.45 Max | 0.40 Max | 3.80-4.50 | 4.70-5.20 | 1.70-2.10 | 5.90-6.70 | - | 0.03 |
Mechanical Properties
| Properties | SKH51 | |
| Tensile Strength (MPa) | 650 - 880 | |
| Yield Strength (MPa) | 350 - 550 | |
| Elongation (%) | 8 - 25 | |
| Hardness (HB) Max | 280 | |
| Supplied Condition | Annealed |
Physical Properties
| Properties | SKH51 | |
| Density (×1000 kg/m3) | 8.10 | |
| Elastic Modulus (GPa) | 219 | |
| Thermal Conductivity (W/m-K) | 22.0 | |
| Specific Heat (J/kg-K) | 433 | |
| Electrical Resistivity (Ohm.mm2/m) | 0.47 |
Application
Taps, twist drills, reamers, broaching tools, metal saws, milling tools of all types, woodworking tools, cold work tools, anchor, pull the knife
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