EN steel grade S690QL material plate weldability

Since it was established in 2000. Based on the domestic rich EN steel grade S690QL material product resources and the great steel demand of the international market, our EN steel grade S690QL material service has already spread many countries in Europe , America, Southeast Asia, Middle East, South America, Africa, etc, and we have won an outstanding reputation for its professional exporting steel products

Quenching and tempering (QT) is a double heat treatment process of quenching and high temperature tempering. In general, medium carbon steel and medium EN steel grade S690QL material carbon alloy steel often need quenching and tempering treatment. Quenching and tempering can make iron and steel parts obtain a good combination of strength and toughness, with high strength, excellent toughness, plasticity, cutting performance, etc. Some EN steel grade S690QL material alloy steel or low alloy steel must be quenched and tempered to obtain good comprehensive properties. These steels can also be called quenched and tempered steels.

Our company has a strong, professional R & D team and advanced and perfect sales service concept, which makes our EN steel grade S690QL material products have a high visibility and market share at home and abroad. At the same time, we will always bear the principle of "credit first, customer first", always put the interests of customers first, and wholeheartedly provide each of our customers with the best products and services.

ASME SA514 grade H alloy steel coil element composition%C: 0.12-0.21, Si: 0.20-0.35, Mn: 0.95-1.30, P max.: 0.035, S max.: 0.035, Cr: 0.40-0.65, Ni: 0.30-0.70, Mo: 0.20-0.30, V: 0.03-0.08, B: 0.001-0.005The mechanical properties in thickness (mm)T≤65Yield strength (≥Mpa): 690Tensile strength (Mpa):760-895Elongation in ≥, %: 18