KS STR309

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

The high quality Korea KS STR309 material is one of the more steel grades we supply, KS D 3731 (2002), KS D 3732 (2002),Heat - resisting steel plates and sheets. STR309 is our main production grade, which has been approved by customers in many countries since its initial production, including our STR309 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 STR309 materials, and we are willing to develop together with customers from all over the world.

Also includes STR309 steel material norm, chemical composition, mechanical properties, datasheet, STR309 equivalent, heat treatment and temperature process of STR309, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in STR309 this steel grade have a more comprehensive understanding, Download the full STR309 PDF version of this datasheet.

Chemical composition (wt.%) of STR309

Elements	Min.（≥）	Max.（≤）
C	-	0.20
Si	-	1.00
Mn	-	2.00
P	-	0.040
S	-	0.030
Cr	22.00	24.00
Ni	12.00	15.00
Mo	-	-
N	-	-

Mechanical Properties of STR309

Rp0.2 (MPa)	Rm (MPa)	Impact KV (J)	Elongation A (%)	A Z (%)	Delivery	Hardness HB
184 (≥)	328 (≥)	41	24	12	Solution & Aging, Ann, Ausaging, Q+T	143