35CrMo7 1.2302 Alloy Cold Work Tool Steel
Type:Round bar
Delivery condition: Annealed black surface/Turned bright surface/Q+T
Products Description
1.2302Tool steel is used to produce molds that need to improve machinability, as well as plastic processing and die-casting molds. Typical applications include mold base, zinc die-casting mold, back plate, support and injection mold, machine manufacturing, fixture, base plate, assembly parts, molding frame, plastic mold, plastic processing, die-casting mold, hydraulic molding tool, socket sleeve, folding rod, tool rack, etc.
Surface Option
1 Black Surface
2 Grounded: Bright but rough ; Not precision
3 Machining for plate: Bright and precision; Little turning scar
4 Peeled/Turned: Bright and precision; Little turning scar
5 Polished: Very Bright and precision size; Not turning scar
Smelting Option
1 EAF: Electric Arc Furnace
2 EAF+LF+VD: Refined-smelting and vacuum degassing
3 EAF+ESR: Electro Slag Remelting
4 EAF+PESR: protective atmosphere Electro Slag Remelting
5 VIM+PESR: Vacuum induction melting
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Products parameters
| Country | GB | DIN |
| Grades | 35CrMo7 | 1.2302 |
1.2302 Equivalents’ Chemical Composition
| C | Si | Mn | P | S | Cr | Mo |
| 0.3 – 0.4 | 0.3 – 0.7 | 0.6 – 1 | max 0.03 | max 0.03 | 1.5 – 2 | 0.35 – 0.55 |
Grade : 35CrMo7
Number: 1.2302
Classification: Alloy cold-work tool steel
Standard: EN ISO 4957: 2000 Tool steels
Our supply size :
Diameter : 80 to 600 mm ;
Length : 1000 to 9000 mm ;
Our capacity :
Delivery condition : Normalized, or Annealed, or Quenched and Tempered ;
Surface condition : Grounded, or Turned, or Polished
Our advantage :
High Quality, Reasonable Price
Over 40 Years Experience
ISO NQA Certificated Factory
Worldwide shipping
Emergency Orders and Fast Delivery
Product Picture
Our factory
Steel Making
Ingot Production
Forged Bars
Machinary
35CrMo7/1.2302 Tool Steel Heat Treatment and Properties
Features:
Machinability: good (S content), good dimensional stability and toughness; Wear resistance and slow cooling after nitriding; Uniform hardness of large cross section, hardening is not common because it has been pre-hardened. Only conditionally applicable to technical polishing.
Delivery hardness: 280 - 325 HB Delivery tensile strength: 950 - 1100 N/mm2
Packing & Delivery
Packing & Delivery
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The inner size of container is below:
-- 20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high)
Our Service
1. Competitive price and quality from our own factory .
2. Best service with 24 hour`s reply .
3. Flexible payment with T/T,L/C , etc .
4. Smooth production ability(1000tons/month).
5. Quick delivery and standard exporting package.
Relevant Steel Specifications of AISI T4 High Speed Tool Steels
| Country | USA | German | Japan |
| Standard | ASTM A600 | DIN EN ISO 4957 | JIS G4403 |
| Grades | T4/T12004 | S 18-1-2-5/1.3255 | SKH3 |
AISI T4 Tool Steel and Equivalents’ Chemical Composition
| ASTM A600 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| T4 | 0.70 | 0.80 | 0.10 | 0.40 | 0.03 | 0.03 | 0.20 | 0.40 | 3.75 | 4.50 | 0.80 | 1.20 | 17.50 | 19.00 | 0.40 | 1.00 | 4.25 | 5.75 |
| DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| S 18-1-2-5/1.3255 | 0.75 | 0.83 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 0.80 | 1.20 | 17.50 | 18.50 | 0.50 | 0.80 | 4.50 | 5.50 |
| JIS G4403 | C | Mn | P | S | Si | Cr | V | W | Mo | Co | ||||||||
| SKH3 | 0.73 | 0.83 | … | 0.40 | 0.03 | 0.03 | … | 0.45 | 3.80 | 4.50 | 0.80 | 1.20 | 17.00 | 19.00 | … | … | 4.50 | 5.50 |
Mechanical Properties of T-4 Steel
| Properties | Metric | Imperial |
| Modulus of elasticity | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Thermal Properties of T4 Tool Steels
| Properties | Metric | Imperial |
| Thermal expansion co-efficient | 11.9 µm/m°C | 6.6 µin/in°F |
Forging of ASTM T4 Tool Steel Materials
Forging of T4 steel can be carried out from 850 to 1120°C (1775 to 2100°F).
Preheat T4 steel material uniformly and slowly to 860-880°C.
Increase the forging temperature up to 1050-1120°C.
T4 hss tool steel should be cooled very slowly after forging.
AISI/ASTM T4 Tool Steel Heat Treatment and Properties
Hardening:
Harden T4 high speed tool steel from a temperature of 1260-1290oC followed by oil, air quenching or warm bath at 550oC. Hardness after quenching is 63-66 HRC.
Annealing:
T4 steel should be annealed after hot working. Increase the temperature of T4 high speed steel to 860°C(Max220°C per hour). Hold at the temperature and then cool slowly with the furnace. The annealed hardness achieved should be below HB255.
Tempering:
Tempering temperature: 2x 560-580oC. Hardness after tempering is 64-65 HRC.
Tag-uri populare: 35crmo7 1.2302 alloy cold work tool steel
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