KS STR661

2014-03-03 17:24:40 Print this page

The high quality Korea KS STR661 material is one of the more steel grades we supply, KS D 3731 (2002), KS D 3732 (2002),Heat - resisting steel plates and sheets. STR661 is our main production grade, which has been approved by customers in many countries since its initial production, including our STR661 round bars, flat bar, forgings, fasteners, tubes, wires, strips, sheets & Plates, as well as a variety of profiles, professional high precision auto-lathe processing manufacturer of clinching fasteners, axes, standoffs, screws, studs, nuts, bolt, OEM parts and special shaped turning partsthe state of delivery includes quenched and tempered, annealed, machined semi-finished products, we also have strict management of the packaging, to avoid material damage from transportation. We are the best supplier of STR661 materials, and we are willing to develop together with customers from all over the world.

Also includes STR661 steel material norm, chemical composition, mechanical properties, datasheet, STR661 equivalent, heat treatment and temperature process of STR661, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in STR661 this steel grade have a more comprehensive understanding, Download the full STR661 PDF version of this datasheet.

Chemical composition (wt.%) of STR661

Elements	Min.（≥）	Max.（≤）
C	0.08	0.16
Si	-	1.00
Mn	1.00	2.00
P	-	0.04
S	-	0.03
Cr	20.00	22.50
Ni	19.00	21.00
Mo	2.50	3.50
N	0.10	0.20
Co	18.50	21.00
W	2.00	3.00
Nb	0.75	1.25

Mechanical Properties of STR661

Rp0.2 (MPa)	Rm (MPa)	Impact KV (J)	Elongation A (%)	A Z (%)	Delivery	Hardness HB
237 (≥)	765 (≥)	14	33	42	Solution & Aging, Ann, Ausaging, Q+T	134