Effect of alloy elements on mechanical properties of sa573gr.70 flat bar

Over the years, the company has established a standard of sa573gr.70 flat bar steel products pre-sale, in sale and after-sale service, which meets customers' needs in all aspects and in the whole process, so that our products and services are deeply trusted by customers, and has established a long-term cooperation and mutual benefit relationship with customers. The company adheres to sa573gr.70 flat bar quality surpervision, comprehensively implements quality management, strictly controls the whole process of product from contract signing to after-sales service.

14Cr1MoR steel plate is suitable for petrochemical, nuclear power, steam turbine cylinder block, thermal power and other high-temperature and high-pressure large-scale equipment that is connected to hydrogen or hydrogen mixed media.
Chemical element composition of sa573gr.70 flat bar container plate:
C: 0.05%-0.17%
Si: 0.50%-0.80%
Mn: 0.40%-0.65%
P: 0.010%-0.012%
Cr: 1%-1.5%
Mo: 0.45%-0.65%
Ni: 0.20%-0.25%

Ordinary medium and thick steel plate sa573gr.70 flat bar is a kind of deoxidized steel. The oxygen content of the steel liquid is relatively high, and a lot of gas will be produced during the production process to make the steel liquid boil, so it is also called boiling steel. Advantages: this kind of steel plate has smooth surface, good quality and easy processing. Because this kind of steel plate has no concentrated shrinkage cavity, the amount of deoxidizer is very small and the price is lower than other steel plates.

A small amount of Nb is sufficient to obtain excellent comprehensive properties of sa573gr.70 flat bar etc. steel material, because at low Nb concentration, the yield strength of steel material increases faster and is proportional to the concentration, but when the Nb content is greater than 0.03%, the strengthening effect begins to decrease. Studies have shown that when the Nb content is greater than 0.06%, excess Nb will no longer strengthen the steel material.

A204 Grade A steel chemical composition(%)Carbon: 0.18-0.25 Manganese max.: 0.90Phosphorus Max.: 0.025Sulfur Max.: 0.025Silicon: 0.15-0.40Molybdenum: 0.45–0.60sa573gr.70 flat bar, A204 Grade A steel mechanical propertiesTensile strength, kis [MPa]: 265-85 [450-585]Yield strength, min, kis [MPa]: 37 [255]Elongation in 8 in. [200 mm], min, %: 19Elongation in 2 in. [50 mm], min, %: 23

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