SUS630 stainless steel,SUS630 Steel plate

Posted:2015-11-30 02:44:55

SUS630 is precipitation, quenching, martensite stainless steel, and this level has high strength, hardness (up to 3000 C/5000 C) and corrosion resistance and other characteristics. 630 is a martensitic precipitation hardening, chromium, nickel, copper stainless steel. The steel can be hardened by a single ageing treatment at relatively low temperatures, this minimises any risk of distortion. 630 is an ideal selection when high strength and corrosion is required.

630 Chemical composition and Mechanical properties

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.07	1.00	1.00	0.040	0.030	15-17.5	3.0-5.0
Mo	Al	Cu	Nb	Ti	V	Ce
		3.0-5.0
N	Co	Pb	B	Other
				(Nb+Ta)0.15-0.45

Technological properties of grade SUS630

Annealing hardness HBS	Cold pull hardness HBS	Preheating temperature ℃	Quenching temperature ℃		Holding time min	Hardening medium	Temper temperature ℃	After tempering hardness ≥HRC
salt-bath furnace	controlled atmosphere furnace
235	262	788	1191	1204	5～15	air cooling	522	60

Steel plate/Sheet thickness / mm	σb MPa	σs ≥/MPa	δ Samples from the standard for 50 mm (2 in)	180 ° of cold bending test
longitudinal	horizontal
Hot-rolled/Cold rolling:5 - 150	520	415	16～18	2a	3.5a

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