Mat. No. 1.2606, DIN X37CrMoW5-1, AISI H12 Tool Steel
Designation by Standards
| Brand Name | Ravne No. | Mat. No. | DIN | EN | AISI |
| UTOP3 | 851 | 1.2606 | X37CrMoW5-1 | - | H12 |
Chemical Composition ( in weight %)
| C | Si | Mn | Cr | Mo | V | W |
| 0.37 | 1.05 | 0.45 | 5.30 | 1.45 | 0.28 | 1.30 |
Description
H12 hot work tool steel is a 5% chromium, general-purpose hot work steel that is characterized by excellent impact toughness. It contains less vanadium than the widely-used H13 hot work tool steel. Steel is a deep-hardening, air-hardening steel that exhibitsminimal size change during heat treatment. It has good resistance to thermal fatique cracking (heat cracking) and excellent resistance to gross cracking and thermal shock when water cooled in service.
Applications
H12 hot work steel is recommended for hot tooling applications where maximum resistance to cracking is required. Such applications include hot puches, die casting dies, forgins diw, hot shear baldes, and extrusion tooling.
Coefficient of Linear Thermal Expansion 10-6℃-1
| 20-100℃ | 20-200℃ | 20-400℃ | 20-600℃ |
| 9.8 | 11.0 | 12.1 | 13.0 |
Soft Annealing
Heat to 820-840℃, cool slowly in furnace. Time is 4-6 hours. This will produce a maximum Brinell hardness of 220.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx.650℃, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening
Harden from a temperature of 1000-1050℃ followed by oil, air quenching or warm bath quenching approx. 540℃. Hardness after quenching is 54HRC.
Tempering
Tempering temperature: 520-700℃, at least 2-3x.
Forging
Hot forming temperature: 1100-850℃.
Machinability
75-80% of a 1% carbon steel.
Corrosion Resistance
Corrosion resistance of this alloy is better than that of plain carbon steels. However it will rust unless given protective treatment.
Wrkshp&Wrhse&Shppg
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, ilitary, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
l steel coil
l steel plate
l steel sheet
l steel bar/rod
steel round bar
steel flat bar
steel square bar
l steel pipe/tube ( welded or seamless )
steel round pipes
steel square pipes
steel welded tubes
steel seamless tubes
l steel strip
l steel beam
l steel angle
l steel channel
l steel flange
l Steel wire
Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Pipeline steel
Bridge steel
Nuclear power steel
Structural steel
Die steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel
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