| Equivalent Grade by Chemistry | ||
|---|---|---|
| Britain | Bs970 | D2 |
| Germany | DIN | X155CrVMo121 |
| USA | AISI | D2 |
| Germany | Werkstoff No. | 1.2379 |
D2 steel is an air hardening, high-carbon, high-chromium tool steel. It has high wear and abrasion resistant properties. It is heat treatable and will offer a hardness in the range 55-62 HRC, and is machinable in the annealed condition. D2 steel shows little distortion on correct hardening. D2 steel’s high chromium content gives it mild corrosion resisting properties in the hardened condition. It is extremely stable in hardening and is capable of being nitrated.
| Element | C | Mn | Si | Co | Cr | Mo | V | P | Ni | Cu | S |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Content (%) | 1.40 – 1.60 | 0.60 | 0.60 | 1.00 | 11.00 – 13.00 | 0.70 – 1.20 | 0.90 - 1.10 | 0.03 | 0.30 | 0.25 | 0.03 |
D2 is suitable for many cold working applications such as fine blanking tools, heavy duty press tools, punches and dies shear blades, granulating knives, slitting cutters, clipping tools thread rolling dies, moulds for abrasive compounds, forming rolls, deep drawing tools, cold extrusion tools, spinning tools.
| Equivalent Grade by Chemistry | ||
|---|---|---|
| Britain | Bs970 | |
| Germany | DIN | 40CrMnMo7 |
| USA | AISI | |
| Germany | Werkstoff No. | 1.2311 |
P20 tool steels are nitrided or carburized. These steels are capable of being machined into complex and large dies and molds. P20 steels are mostly used in the carburized condition. The presence of chromium and nickel enhances the toughness and hardness of P20 steels. P20 is hardened and tempered mould steel supplied at 280 - 325 BHN. It takes a good polish and may be nitrified to increase surface hardness.
Pre hardened to approximately 300 B.H (65 t.s.i) P20 requires no further heat treatment therefore avoiding risk of distortion or cracking. Although pre-hardened P20 is still capable of being machined and of giving a good polished finish.
| Element | C | Mn | Si | Cr | Mo | Cu | P | S |
|---|---|---|---|---|---|---|---|---|
| Content (%) | 0.30 - 0.40 | 0.70 - 1.50 | 0.20 - 0.80 | 1.40 - 2.00 | 0.20 - 0.45 | 0.25 | 0.03 | 0.03 |
Used for quality for pressing and injection moulding tools. If the section exceeds 400mm P20 (1.2311) won't provide a consistent through hardness. Suitable for hard chrome plating and for nitriding
| Equivalent Grade by Chemistry | ||
|---|---|---|
| Britain | Bs970 | H13 |
| Germany | DIN | X40CrMoV51 |
| USA | AISI | H13 |
| Germany | Werkstoff No. | 1.2344 |
H13 chromium hot-work steel is widely used in hot and cold work tooling applications. Due to its excellent combination of high toughness and fatigue resistance H13 is used more than any other tool steel in tooling applications. H13 is a versatile hot work tool steel giving good strength and wear resistance. It has good thermal shock resistance and will tolerate a degree of water cooling in service . H13 may be nitrified but care should be taken not to impart too great a depth of hardness as shock resisting capacity will be reduced.
| Element | Chromium, Cr | Molybdenum, Mo | Silicon, Si | Vanadium, V | Carbon, C | Nickel, Ni | Copper, Cu | Manganese, Mn | Phosphorus, P | Sulfur, S |
|---|---|---|---|---|---|---|---|---|---|---|
| Content (%) | 4.75 - 5.50 | 1.10 - 1.75 | 0.80 - 1.20 | 0.80 - 1.20 | 0.32 - 0.45 | 0.03 | 0.25 | 0.20 - 0.50 | 0.03 | 0.03 |
Hot forging and pressing dies, Extrusion dies, mandrels and punches, Hot chisels, Pressure pads, Extrusion stems and rams, hot shear blades and stamping die. It may also be used for plastic mould tools.