1.2316 - X38CrMo16
Delivery condition
⚙️ Delivery Condition
| Designation | Delivery condition | Hardness (approx.) | Note |
|---|---|---|---|
| 1.2316 | Soft annealed | max. ~230 HB | intended for machining, followed by hardening |
| Quenched and tempered (QT) | ~48–52 HRC | ready for immediate use – molds, cavities | |
| Polished surface (POLISHED) | on request | for optically clean molds | |
| Pre-hardened condition | approx. ~1000–1100 N/mm² | good machinability and strength |
Material number
🧾 Basic Designation
| System / Standard | Designation |
|---|---|
| EN (steel number) | 1.2316 |
| EN (designation according to chemical composition) | X38CrMo16-1 |
| DIN | X38CrMo16-1 |
| AISI / ASTM | AISI 420 mod. (modified version of AISI 420) |
| ČSN (approximate equivalent) | 17 029 |
| ISO | X38CrMo16 |
Properties and Applications
⚙️ Properties
- Supplied in the pre-hardened condition (QT) with a hardness of approx. 280–325 HB (30–34 HRC).
- Excellent corrosion resistance, even in contact with aggressive plastics and cooling water.
- Good polishability – suitable for optical molds.
- Stable structure and good machinability in the QT condition.
- Can be nitrided to increase surface hardness.
🧰 Applications
- Steel with high corrosion resistance and excellent polishability.
- Stable during heat treatment – minimal distortion.
- Suitable for mirror-polished surfaces and molds operating in aggressive or humid environments.
- Can be machined by EDM (electrical discharge machining) without significant reduction in corrosion resistance.
Chemical Composition
🧪 Chemical Composition
- C (Carbon): 0.33 – 0.45%
- Cr (Chromium): 15.5 – 17.0%
- Mo (Molybdenum): 1.0 – 1.3%
- Mn: max. 1.00%
- Si: max. 1.00%
- P: max. 0.030%
- S: max. 0.030%
Heat Treatment
🔥 Heat Treatment
(Usually not carried out, as the steel is already supplied in the QT condition.)
- Soft annealing: 750–800 °C, slow cooling.
- Hardening: 1000–1040 °C, quenching in oil or in air.
- Tempering: 200–300 °C (to the required hardness, usually 50–54 HRC in case of additional treatment).
Delivery condition
Material number
Properties and Applications
Chemical Composition
Heat Treatment
