What is chemical composition and mechanical properties of s355 hot rolled automotive steel grade

Our company attaches great importance to technical support and after-sales service, and has established a customer service center to provide unified technical support and service for s355 hot rolled automotive steel grade various engineering projects. Cus

Our company attaches great importance to technical support and after-sales service, and has established a customer service center to provide unified technical support and service for s355 hot rolled automotive steel grade various engineering projects. Customer service center has a strong technical force of technical service team, composed of a customer service center manager, several s355 hot rolled automotive steel grade after-sales service personnel, responsible for unified acceptance and processing of local after-sales service needs.

Grade Q420 steel has high strength, especially in the normalizing or normalizing and tempering state. s355 hot rolled automotive steel grade, Q420 steel has high comprehensive mechanical properties. Q420 steel is mainly used for large ships, bridges, power station equipment, medium and high pressure boilers, high pressure vessels, rolling stock, hoisting machinery, mining machinery and other large welded structural parts. Grade Q460 steel, with high strength, has high comprehensive mechanical properties in normalizing, normalizing and tempering or quenching and tempering states. The quality grades are C, D, E. Q460 steel is used in various large engineering structures and light structures requiring high strength and heavy load.

The chemical composition of Q345D seamless steel pipe is as follows: C ≤ 0.18, Si ≤ 0.50, Mn ≤ 1.70, P ≤ 0.030, S≤ 0.025, Nb ≤ 0.07, V ≤ 0.15, Ti ≤ 0.20, Cr ≤ 0.30, Ni ≤ 0.50, Cu ≤ 0.30, N ≤ 0.012, Mo ≤ 0.10, Al ≥ 0.015. s355 hot rolled automotive steel grade, Q345D seamless steel pipe has good comprehensive mechanical properties, low temperature impact toughness, corrosion resistance, cold stamping, machinability and weldability. Q345D seamless steel pipe is widely used in welding structures, such as bridges, vehicles, ships, pipelines, boilers, large vessels, etc..

We have a professional after-sales department to collect all information related to customers, so as to make relevant treatment in time according to the information, and file it; guide the user's product use methods and precautions; coordinate with the sales department, visit customers regularly, understand the customer's use and new requirements, and make a customer visit record; When communicating with customers, they should be enthusiastic and careful to understand the situation of product problems and put forward solutions