What is nm400 weathering steel grade?

Since it was established in 2000. Based on the domestic rich NM400 weathering steel product resources and the great steel demand of the international market, our NM400 weathering steel 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

100Cr6 bearing steel has good toughness, good tempering stability, and small deformation during heat treatment. The carbides in the steel are evenly distributed, it is not easy to precipitate carbide nets, and it is easy to eliminate normalizing. Through normalizing, the network and coarse carbide structures can be eliminated. NM400 weathering steel, 100Cr6 bearing steel can be used to manufacture measuring tools, molds, woodworking tools.

Compared with 15Cr steel, 20Cr alloy has higher strength and hardenability. The critical hardening diameter in oil is 4-22mm, and the critical hardening diameter in water is 11-40mm, but the toughness is poor. This NM400 weathering steel alloy steel NM400 weathering steel still has a tendency to grow grains during carburization, and direct quenching at lower temperature has a greater impact on impact toughness, so secondary quenching is required after carburization to improve the toughness of the core of the part, and there is no temper brittleness.

Water cutting machine is called water knife for short, that is, water is used as knife. High pressure water jet cutting technology can perform any curve cutting process on any material, NM400 weathering steel included. The heat generated in the cutting process will be immediately taken away by the water jet without harm. Material, no need or easy to reprocess after cutting, safety and environmental protection, faster, faster, more efficient.

A36 is American Standard ASTM material, SS400 is Japanese Standard JIS g3101 steel material for general structure, Q235 is Chinese standard GB700 material. The limitation of the content of the Mn element differs depending on the thickness of the A36 steel plate, and the A36 steel plate of 20 mm or less does not contain Mn. The NM400 weathering steel, Q235 steel plate has requirements for the contents of C, Si, Mn, S, P and other elements. But SS400 steel plate only requires S and P to be less than 0.050, and no other element requirements.

our company is leading supplier of API 5CT casing pipes in China. N80 oil casing pipes enjoy high size precision, good weld toughness, NM400 weathering steel good extrusion resistance, easy quality control and low cost features. Welcome to our company to purchase NM400 weathering steel API 5CT N80 and so on casing pipes.

The company's after-sales service tenet is "customer first, timely guarantee, enthusiastic service and effective work". In order to establish a set of perfect after-sales service system and strict management system, so that the after-sales service can be effectively guaranteed. The company has set up after-sales service department to ensure timely, unique and effective response to every user's request, coordinate internal resources internally, and put an end to all evasion and delay.