Liaocheng Jinghua Steel Pipe Co., Ltd.: a variety of customized door bumper, car bumper, BR1500HS steel, automotive precision tubes car crash pipe yield strength, car seats with steel. Specifications are 22x2.2 32x2 after heat treatment, according to customer requirements sizing saws. BR1500HS steel chemical composition, the tensile strength after heat treatment, yielding the number of degrees? The influence of quenching temperature and holding time on BR1500HS ultra-high strength boron steel tensile strength, hardness and other mechanical properties and microstructure. The results showed that with increasing temperature quenching car crash pipe tensile strength, tensile strength and hardness increased, when the holding time is greater than 8 min, quenching temperature is higher, the thick tissue, testing the tensile strength of steel and hardness decreased. Reasonable test steel hardening process for the quenching temperature 900 ~ 950 ℃, holding time 4 ~ 8 min, BR1500HS ultra-high strength boron steel in this process of hardening martensitic transformation complete, with good mechanical properties. Ingredient Percent (wt%) C 0.19 ~ 0.25 B 0.0008 ~ 0.005 Mn 1.10 ~ 1.4 Cr 0.15 ~ 0.35 Al 0.02 ~ 0.06 Ti 0.02 ~ 0.05 Si ≤0.40 P ≤0.025 S ≤0.015 properties: yield strength before quenching ≥300MPa, tensile strength ≥600MPa; yield strength after quenching ≥1200MPa, tensile ≥1500MPa Jinghua Liaocheng Ltd. mainly produces high-frequency welded steel pipe, tube, square tube, rectangular tube, shaped, C-steel, widely used in automobile manufacturing, furniture Car crash pipe, vehicles, trailers, machinery manufacturing, industrial plants, security doors and windows and other types of manufacturing industry after the heat treatment, the company manufacturing high-quality steel products, all kinds of physical and chemical indicators have reached the national standard characters, products sold throughout the country, praised by customers. A variety of customized door bumper, car bumper, BR1500HS steel, automotive precision tubes tube car crash, car seats with a steel pipe. Specifications are 22x2.2 32x2 after heat treatment, according to customer requirements sizing saws. BR1500HS steel chemical composition, the tensile strength after heat treatment, yielding the number of degrees? Performance: yield strength before quenching ≥300MPa, tensile ≥600MPa; yield strength after quenching ≥1200MPa, tensile strength tensile strength _ ≥1500MPa car crash Jinghua steel tube (certified) _ Xinyu car crash tube from Liaocheng Jinghua Steel Pipe Co. provided. Liaocheng Jinghua Steel Pipe Co. (www.sdwfgc.com) Shandong Liaocheng, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Pipe leadership in Beijing with the staff warmly welcome all inquiries negotiations to create a better future for Jinghua steel.