KS STR21

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

The high quality Korea KS STR21 material is one of the more steel grades we supply, KS D 3732 (2002),Heat - resisting steel plates and sheets. STR21 is our main production grade, which has been approved by customers in many countries since its initial production, including our STR21 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 STR21 materials, and we are willing to develop together with customers from all over the world.

Also includes STR21 steel material norm, chemical composition, mechanical properties, datasheet, STR21 equivalent, heat treatment and temperature process of STR21, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in STR21 this steel grade have a more comprehensive understanding, Download the full STR21 PDF version of this datasheet.

Chemical composition (wt.%) of STR21

Elements	Min.（≥）	Max.（≤）
C	-	0.10
Si	-	1.50
Mn	-	1.00
P	-	0.04
S	-	0.03
Cr	17.00	21.00
Ni	-	0.60
Mo	-	-
N	-	-
Al	2.00	4.00

Mechanical Properties of STR21

Rp0.2 (MPa)	Rm (MPa)	Impact KV (J)	Elongation A (%)	A Z (%)	Delivery	Hardness HB
983 (≥)	232 (≥)	44	42	22	Solution & Aging, Ann, Ausaging, Q+T	314