Plastic Mould Steel
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Our Stocks are indicated in the tables below. Standard sizes not in our stocks can be requested
P – 20
Plastic Mould Steel
GENERAL
- Hardenable and Temperable
- Well Polishable
- Nitridable
- Suitable for chrome plating and pitting
- Uniform hardness up to a cross section of approx 400mm
- Good Toughness
- Good Machinability
Service Strength 280 – 325 B [950-1100 N/mm (sq)]
APPLICATION
Plastic Moulds; Tool Frames; Mould frames for plastic & pressure casting moulds
OUR STOCKS
- Round: Ø 26mm – Ø 100mm
- Flats: 16 x 50mm to 130 x 400mm
| C | Si | Mn | P | S | Cr | Mn |
|---|---|---|---|---|---|---|
| 0.37 | ≤ 0.50 | 1.4 | ≤ 0.25 | ≤ 0.000 | 1.8 | 0.15 |
| 0.42 | 1.6 | 2.1 | 0.25 |
Physical Properties
| Co-Ef of Thermal Expansion | 20 -100°C | 20 – 200°C | 20 -300°C | 20 – 400°C | 20 – 500°C | 20 – 600°C | 20 – 700°C |
|---|---|---|---|---|---|---|---|
| (10-6(m(m x k)) | 11.1 | 12.9 | 13.4 | 13.8 | 14.2 | 14.6 | 14.9 |
| Thermal Conductivity | 20°C | 350°C | 700°C | ||||
| [W/(m x k)] | 35.7 | 33.2 | 31.9 |
