About Material 1.2343 (x37crmov5-1)
X37CrMoV5-1 steel has excellent high temperature strength and toughness as well as excellent thermal conductivity and low hot cracking sensitivity.
Material 1.2343 (x37crmov5-1) is a general-purpose hot work tool steel. Used in mandrels, pressure casting molds and extrusion tools; pressure casting molds and extrusion tools for light metal processing, forging dies, mandrels, shrink rings, hot shear blades, etc.
AISI H11 Tool Steel Standard and Related Steel Specifications
| Country | USA | Germany | Japan | UK |
| Standard | ASTM A681. | DIN EN ISO 4957 | JIS G4404. | BS 4659 |
| Equivalent Grade | H11 / T20811. | 1.2343 / X37CRMOV5-1 | SKD6. | BH11 |
H11 Steel Chemical Compositions
| ASTM A681. | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| H11 / T20811. | 0.35 | 0.45 | 0.20 | 0.60 | 0.03 | 0.03 | 0.80 | 1.25 | 4.75 | 5.50 | 0.30 | 0.60 | 1.10 | 1.60 |
| DIN ISO 4957. | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| 1.2343 / X37CRMOV5-1 | 0.28 | 0.35 | 0.10 | 0.40 | 0.03 | 0.03 | 0.80 | 1.20 | 2.70 | 3.20 | 0.40 | 0.70 | 1.10 | 1.50 |
| JIS G4404. | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| SKD6. | 0.32 | 0.42 | 0.50 | 0.03 | 0.03 | 0.80 | 1.20 | 4.50 | 5.50 | 0.30 | 0.50 | 1.00 | 1.50 | |
| BS 4659 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| BH11 | 0.32 | 0.40 | 0.40 | 0.35 | 0.35 | 0.85 | 1.15 | 4.75 | 5.25 | 0.30 | 0.50 | 1.25 | 1.75 | |
1.2343/X40CrMoV5-1 Mechanical Properties
- Annealed/Softened Condition - Hardness: <229 HB
- Tempering state hardness: min >48 HRC
- Hardness after hardening: 57.3 - 57.5 HRC
1.2343/X37CrMoV5-1 tool steel is widely used in high-stress hot work tools. Typical uses include:
- Extrusion industry: extrusion dies and containers
- Forging industry: forming dies, stamping dies
- Die-casting industry: mold mold-tungsten carbide





