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X40CrMoV5-1 Steel
X40CrMoV5-1 steel is suitable for hot die processing, die casting and extrusion dies, wear-resistant tools, die-casting tools, light metal and heavy metal pressing tools.
- Fucheng Steel
- China
- 1 Month
- 2000 Tons/Month
- Information
X40CrMoV5-1 TOOL STEEL
| Smelting and Manufacture Method: | LF+VD+ESR+Forged |
| Delivery Condition: | Annealed |
| Delivery hardness： | ≤235 HBS |
| UT Test Standard: | Sep 1921-84 Class3 D/d,E/e |
X40CrMoV5-1 STEEL GRADE COMPARISON AND CHEMICAL COMPOSITION COMPARISON
| Standard/Steel Grade | Chemical Composition(%) | ||||||
| C | Si | Mn | Cr | Mo | V | ||
| DIN/W-Nr. | X40CrMoV5-1/1.2344 | 0.35~0.42 | 0.90~1.20 | 0.30~0.50 | 4.80~5.50 | 1.20~1.50 | 0.90~1.15 |
| ASTM | H13 | 0.32~0.45 | 0.80~1.20 | 0.20~0.50 | 4.75~5.50 | 1.10~1.75 | 0.80~1.20 |
| JIS | SKD61 | 0.35~0.42 | 0.80~1.20 | 0.25~0.50 | 4.80~5.50 | 1.00~1.50 | 0.80~1.15 |
APPLICATION
X40CrMoV5-1 steel occupies a core position in die casting mold manufacturing, especially suitable for high-pressure casting of light metals such as aluminum alloys and magnesium alloys. Its excellent thermal fatigue resistance can increase the mold life by more than 30%. X40CrMoV5-1 steel can maintain stable hardness at a high temperature of 700 ℃, effectively resisting metal liquid erosion and thermal shock.
As a hot forging die material, X40CrMoV5-1 steel can withstand instantaneous contact temperatures above 1200 ℃ and is commonly used for hot forging of difficult to deform materials such as titanium alloys and high-strength steels. The dense oxide film formed by 5% chromium content can significantly reduce the surface oxidation loss of the mold.
X40CrMoV5-1 steel exhibits unique advantages in the field of plastic molds, particularly suitable for injection molding of fiberglass reinforced engineering plastics. After tempering at 530-560 ℃, the hardness reaches 48-52HRC, with both wear resistance and demolding performance. Molybdenum element (1.2-1.5%) can effectively resist glass fiber abrasion.
X40CrMoV5-1 steel is also widely used in the manufacturing of high-temperature cutting tools, such as hot shear blades, continuous casting billet cutting guide wheels, etc. It can maintain a hardness of HRC40 or above at 800 ℃. The optimized silicon content (0.8-1.2%) can improve high-temperature strength, while vanadium carbide (VC) enhances wear resistance.
X40CrMoV5-1 Heat treatment of mold steel
Forging, annealing, quenching, tempering
1050-850 ℃ 820-840 ℃ 1020-1050 ℃ 520-700 ℃
Purity: According to ASTME45 method A, A sulfide ≤ 0.5, B oxide, C silicate, and D spherical oxide ≤ 1 each, or DIN50602-K1 ≤ 10, or according to customer requirements.
Isothermal annealing specification
Annealing temperature (85010) C, insulation for 2 hours, cooling to (72010) ℃ with furnace, insulation for 4 hours, furnace cooling to below 500C, air cooling after discharge, hardness ≤ 229HBW.
High temperature tempering specification
Tempering temperature (73010) C, insulation for 2 hours, furnace cooling ≤ 500C, outlet air cooling.
Quenching and tempering specifications
Quenching temperature 850~880 ℃, oil cooled, hardness 50~52HRC; Tempering temperature 580-640C, outlet air cooling, hardness 28-36HRC
Specification for pre hardening treatment
Heating temperature 860-900C, oil cooled, tempering temperature 570-70OC, air cooled, tempering hardness 28-35HRC.
X40CrMoV5-1 Physical properties of mold steel
(1) Density: 7.31g/cm.
(2) Linear expansion coefficient:
Temperature 18-100 ℃ 18-200C 18-300C 18-400C 18-500 ℃ 18-600 ℃ 18-600 ℃
Linear expansion coefficient 11.910K 12.2010K 12.5010K 12.8110K 13.1110K 13.4110K 13.7110K
(3) Elastic modulus: (20C) 212000MPa, shear modulus (room temperature) 825000MPa, Poisson's ratio 0.288
(4) Thermal conductivity:
Temperature 20 ℃ 100 ℃ 200C 300C 400C
Thermal conductivity 36.0 [W/(mK)] 33.4 [W/(mK)] 31.4 [W/(mK)] 30.1 [W/(mK)] 29.3 [W/(mK)]
Application status: 30-56HRC.
Pre hard hardness ≤ 28HRC; Annealed state, hardness ≤ 22HRC
