630（UNS S17400）

Applications：

Features:

Properties：

*Precipitating, hardening and martens tic stainless steel consisting of Cu, Nb and Cb.

*High improved strength, but weaker corrosion resistance compared with austenitic stainless steel; good resistance to air, aqueous media and heavily        diluted acids, alkaline or salt solutions; the corrosion resistance ability similar as 304 and 430   

*Easy to adjust strength degree by heat treatment

*Not suitable in temperature higher than 300ºC (572ºF) or very low degree.

Applications：

*Offshore platform, helicopter deck and other platforms

*Food industry, paper pulp industry and aerospace(turbine blades)

*Machine components; nuclear waste drum and nuclear reactors

Available Standards ：

ASTM A564/A564M-04，ASTM A693, AMS5659

Available Size Range for seamless pipes and tubes：

OD 6～114mm  WT  0.5～15 mm