ASTM A572 Grade 50 High-Strength Low-Legierungsstahl
ASTM A572/A572M · Published: 2026-05-23 · Updated: July 2026
ASTM A572 Grade 50 is a high-strength low-alloy (HSLA) structural steel with columbium-vanadium micro-alloying that delivers 345 MPa minimum yield strength—38% stronger than A36. Its superior strength-to-weight ratio allows engineers to reduce...
ASTM A572 Güte 50 ist ein hoch-strength niedrig-alloy (HSLA) structural steel mit columbium-vanadium micro-alloying das delivers 345 MPa minimum yield strength—38% stronger als A36. Sein superior strength-zu-weight ratio allows engineers zu reduce structural weight durch 20-30% compared zu A36 designs. Commonly used für bridges, transmission towers, construction ausrüstung, und heavy-duty structural applications. Available in plates, shapes, und sheet piling mit gut weldability using niedrig-hydrogen practices.
Quick Facts
| Kategorie | Kohlenstoffstahl |
| Norm | ASTM A572/A572M |
| Density | 7.85 g/cm³ |
| Yield Strength | 345 MPa (50 ksi) |
| Tensile Strength | 450 MPa (65 ksi) |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| S355JR | Compare |
| Q355 | Compare |
| SM490 | Compare |
| St52-3 | Compare |
| E355 | Compare |
Heat Treatment & Processing
| Normalizing | 870-900°C, luft cool |
| Stress Relieving | 595-650°C, 1h/25mm |
Welding & Fabrication
| Preheat | Nicht erforderlich <20mm |
| Filler Metal | E7018, ER70S-6 |
| Interpass Temp | Max 315°C |
| Schweißeignung Rating | Excellent |
Verwandt Materials
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Frequently Asked Questions
Können A572 Güte 50 ersetzen A36 in structural design?
Ja, A572 Gr 50 können ersetzen A36 in meiste structural applications mit significant weight savings. Der higher strength allows lighter sections, but designers müssen prüfen deflection und stability limits welche kann govern mit thinner sections. Welding procedures sollte verwenden matching-strength filler metals (e.g., E70XX electrodes).
References & International Standards
- ASTM International. Norm Specifications für Stahl & Metal Alloys. astm.org
- International Organization für Standardization (ISO). Metallic Materials — Cross-Referenz Database. iso.org
- American Iron und Stahl Institute (AISI). Stahl Güte Designations & Equivalents. steel.org
- European Committee für Standardization (CEN). EN Stahl Standards & Numbering System. cencenelec.eu