ASTM A572 Güte 65: Extra-Hoch-Strength Structural Stahl
ASTM A572/A572M · Published: 2026-05-26 · Updated: July 2026
ASTM A572 Grade 65 is a columbium-vanadium HSLA steel offering 450 MPa minimum yield strength—80% stronger than A36. Its high strength-to-weight ratio enables dramatic structural weight reduction in bridges, high-rise buildings, and heavy...
ASTM A572 Güte 65 ist ein columbium-vanadium HSLA steel offering 450 MPa minimum yield strength—80% stronger als A36. Sein hoch strength-zu-weight ratio enables dramatic structural weight reduction in bridges, hoch-rise buildings, und heavy construction ausrüstung. Der controlled micro-alloy content limits carbon equivalent für gut weldability despite der hoch strength. Available in plates, shapes, und bars mit Charpy impact testing options für dynamic loading applications. Specify weathering Güte 65W (ASTM A871) für unpainted bridge applications.
Quick Facts
| Kategorie | Kohlenstoffstahl |
| Norm | ASTM A572/A572M |
| Density | 7.85 g/cm³ |
| Yield Strength | 450 MPa (65 ksi) |
| Tensile Strength | 550 MPa (80 ksi) |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| S460 | Compare |
| Q460 | Compare |
| SM570 | Compare |
| StE460 | Compare |
| E460 | Compare |
Heat Treatment & Processing
| Normalizing | 870-900°C, luft cool |
| Hinweis | Higher strength als Gr50. Used in bridges und hoch-stress structures. |
Welding & Fabrication
| Preheat | 50-100°C für sections >25mm |
| Filler Metal | E8018, ER80S-G |
| Schweißeignung Rating | Gut — higher CE als Gr50, preheat recommended |
Verwandt Materials
🧮 Material Weight Calculator
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Frequently Asked Questions
Was welding precautions sind needed für A572 Gr 65?
Verwenden niedrig-hydrogen electrodes (E8018 oder equivalent) und maintain preheat von 50-100°C für sections unter 25 mm, increasing zu 100-150°C für thicker material. Der higher carbon equivalent (0.40-0.45) compared zu Gr 50 requires mehr careful heat input steuerung. Für kritisch dynamically loaded welds, specify matching-strength filler mit Charpy-tested weld metal. Avoid übermäßig heat input (>3.5 kJ/mm) welche degrades der fine-grain HSLA microstructure.
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