MATERIAL DATASHEET – ST52-3
Low Carbon Manganese Steel
1. General Information
Material Grade: ST52-3
Condition(s): Untreated / Normalised
Surface Finish: As rolled
Associated Standard: DIN 17100
Description: Readily weldable low carbon manganese steel with good impact resistance (also at sub-zero temperatures). Commonly supplied untreated or normalized. Machinability is similar to mild steel.
2. Typical Applications
- Welded components
- General engineering structures
- Construction components
3. Conditions
- +U: As rolled
- +N: Normalised
4. Chemical Composition (% by weight)
| C* | Si | Mn | S | P |
|---|---|---|---|---|
| ≤ 0.22 | ≤ 0.55 | ≤ 1.60 | ≤ 0.04 | ≤ 0.04 |
*Carbon content differs with section thickness
5. Typical Mechanical Properties
| Condition | Sample Dia | Yield Strength (Re) | UTS (Rm) | Elong. (A) | R of A (Z) | Hardness (HB) | Impact KV (0°C) | Impact KV (-20°C) |
|---|---|---|---|---|---|---|---|---|
| ST52-3 +U | >40 ≤ 63mm | Min 335 | 490 – 630 | 21% | – | – | 27 | – |
| ST52-3 +N | >40 ≤ 63mm | Min 335 | 490 – 630 | 21% | – | – | 27 | – |