Hot Work Tool Steel Plate/Bar T5 High Speed Tool Steel (T5, 1.3265, S18-1-2-10, SKH4) Special Steel/Die Steel
Shanghai Bozhong Metal Group Co., Ltd.- Standard：DIN, JIS, AISI, ASTM, GB, BS
- Technics：Hot Rolled
- Application：Tool Steel Bar
- Surface：Black
- Alloy：Alloy
- Special Use：High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
Base Info
- Model NO.：T5
- Trademark：Bozhong
- Origin：China
- Production Capacity：50000tons,Month
Description
| Country | USA | German | Japan | British |
| Standard | ASTM A600 | DIN EN ISO 4957 | JIS G4403 | BS 4659 |
| Grades | T5/T12005 | 1.3265/S18-1-2-10 | SKH4 | BT5 |
3.AISI T5 Tool Steels and Equivalents' Chemical Composition
| ASTM A600 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| T5 | 0.75 | 0.85 | 0.20 | 0.40 | 0.03 | 0.03 | 0.20 | 0.40 | 3.75 | 5.00 | 1.80 | 2.40 | 17.50 | 19.00 | 0.50 | 1.25 | 7.00 | 9.50 |
| DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| 1.3265/S18-1-2-10 | 0.72 | 0.80 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 1.40 | 1.70 | 17.50 | 18.50 | 0.50 | 0.80 | 9.00 | 10.00 |
| JIS G4403 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| SKH4 | 0.73 | 0.83 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 1.00 | 1.50 | 17.00 | 19.00 | … | … | 9.00 | 11.00 |
| BS 4659 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| BT5 | 0.75 | 0.85 | … | 0.40 | 0.35 | 0.35 | … | 0.40 | 3.75 | 4.50 | 1.75 | 2.05 | 18.50 | 19.50 | … | 1.00 | 9.00 | 10.00 |
4.High Speed Tool Steel T5 Mechanical Properties
Physical Properties of High Speed T5 Tool Steels
| Property | Density
kg/dm3 | Temperature T
°C/F | Specific heat
J / kgK | Thermal conductivity
W/mK | Electric resistance
µΩ·cm | Modulus of elasticity
kN/mm2 | Temp.
°C/°F | Creep strain limit
(10000h) | Creep rupture strength
(10000h) |
| 445 (≥) | 839 (≥) | 42 | 42 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 424 | 883 | 167 | 975 |
Mechanical Properties of HSS T-5 Steel
| Properties | Metric | Imperial |
| Density | 8.75 g/cm3 | 0.316 lb/in3 |
| Properties | Metric | Imperial |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
5.Forging of ASTM T5 Tool Steel Materials
Hot forming temperature: 1150-900oC.
6.ASTM T5 Tool Steel Heat Treatment
Annealing of T-5 Steel
Annealing is recommended after hot working and before re hardening
Heat the temperature to 850°C at a rate of no more than 220°C per hour.
Hold at the temperature for one hour per inch of thickness(at least two hours).
Cool slowly in the furnace or in air to ambient temperature.
The resultant hardness achieved should be Max 255HB or lower.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 600-650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening of Steel T5
Preheat T5 tool steel slowly to the temperature of 820-870°C.
Heat to the final hardening temperature of 1250°C and make sure the material must be heated through.
Quench in the warm oil,and then complete the quench in air.(care must be taken at this step)
Tempering of T-5 Steel
Tempering temperature: 550-590oC.
Tempering Temperature (oC) vs. Hardness (HRC)
| 100oC | 150oC | 200oC | 250oC | 300oC | 350oC | 400oC | 450oC | 500oC | 550oC | 600oC | 650oC |
| 64 | 64.5 | 63 | 62.5 | 62 | 62 | 62.5 | 63.6 | 64.8 | 66 | 64 | 60 |
7.Applications of ASTM/AISI T5 Tool Steel
ASTM T5 high speed steels are generally used as cutting tools, broaches and cold extrusion punches, turning blades, punchers, metal working blades.
Typical applications are:
Drills,
Milling Cutters,
Thread Cutting Tools,
Knurling Tools,
Cold extrusion punches
Broaches etc.
