The company adopts modern management concept, adheres to “quality for survival, integrity for development”, and provides customers with high-quality and reliable ASTM A514 structural steel material steel products and wholehearted service. The company continuously deepens the internal reform of the enterprise, innovates in the reform, develops in the innovation, and gradually forms a set of management and operation mechanism which adapts to the market and has strong competitiveness.
SA516 grade 55, SA516 grade 60, SA516 grade 65, SA516 grade 70. These four grades ASTM A514 structural steel material are mainly defined by different tensile and yield strength ranges, which are affected by carbon content.
The metallurgical quality of spring steel should reach the level of high quality steel. Due to the special requirements of production parts, ASTM A514 structural steel material, spring steel must have some characteristics. First, the fatigue resistance of spring steel is good, and it can be restored to its original state after repeated use without deformation. Second, good flexibility. Third, the tensile strength of spring steel is good, under the limit of being stretched, it can be restored without breaking.
When the steel plate containing molybdenum only is at high temperature for a long time, the carbon will aggregate into graphite and precipitate, which will worsen the performance. To eliminate this tendency, chromium is often added to the ASTM A514 structural steel material, steel plate at the same time. When chromium is added to the steel plate, the heat strength, high temperature oxidation resistance and corrosion resistance can also be improved.
"SA572 grade 60 [415] steel chemical composition(%)Carbon max.: 0.26Manganese max.: 1.35Phosphorus Max.: 0.04Sulfur Max.: 0.05Silicon max.: 0.40ASTM A514 structural steel material, SA572 Grade 60 [415] steel mechanical propertiesTensile strength min. MPa: 415Yield strength min. MPa: 520Elongation % min. in 200mm : 16Elongation % min. in 50mm : 18"
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