P20 steel chemical Composition and p20 steel hardness.
You can find P20 steel chemical composition and p20 steel hardness in this article.
P20 Mould Steel may be a versatile, low-alloy alloy steel.
that’s characterized by good toughness at moderate strength levels.
The steel is usually used for plastic injection mould cavities and tooling and for die casting dies for zinc.
P20 is usually sold within the pre-hardened condition at a hardness of roughly 300 HBW.
P20 STEEL Pre Hardened Steel Chemical Composition
| P20 STEEL GRADE | C | Cr. | Fe. | Mg. | Mo. | P. | Si. | S | Ni. |
|---|---|---|---|---|---|---|---|---|---|
| 1.2311 | 0.28-0.4 | 1.4-0.2 | Balance | 0.6-0.1 | 0.30-0.55 | .03max | 0.2-0.8 | .03max | - |
| 1.2738N | 0.28-0.4 | 1.8-2.1 | Balance | 1.3-1.6 | 0.15-0.25 | .03max | 0.2-0.4 | .03max | 0.9-.1.2 |
Because of P20 Steel is sold in a pre-hardened condition.
any kind of Hardening / Heat treatment is not necessary. After the machining and intermittently during service.
p20 steel must be thermally stress relieved by heating to 950ºF (510ºC), equalizing and holding for 1 hour per inch “25.4mm” of thickness, and cooling in air to ambient temperature.
In those rare circumstances where the steel must be re-hardened,
the steel must first be annealed before hardening.
