B.S. HR251

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

The high quality UK B.S. HR251 material is one of the more steel grades we supply, B.S. BS HR 251 (1974),Specification for heat-resisting alloy plate, sheet and strip (Ni 25.5, Cr 14.7, Ti 1.8, Mn 1.5, Mo 1.2, V 0.3, Fe remainder). HR251 is our main production grade, which has been approved by customers in many countries since its initial production, including our HR251 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 HR251 materials, and we are willing to develop together with customers from all over the world.

Also includes HR251 steel material norm, chemical composition, mechanical properties, datasheet, HR251 equivalent, heat treatment and temperature process of HR251, The peak hardness can be achieved, Contains all of the specification, welding properties, let us in HR251 this steel grade have a more comprehensive understanding, Download the full HR251 PDF version of this datasheet.

Chemical composition (wt.%) of HR251

Elements	Min.（≥）	Max.（≤）
C	-	0.06
Si	-	0.50
Mn	-	2.00
P	-	0.020
S	-	0.015
Cr	13.50	16.00
Ni	24.00	27.00
Mo	1.00	1.50
Co	-	-
Ti	1.70	2.00
Fe	-	remaining
Al	-	0.35
V	1.70	2.00
B	0.003	0.010
Pb	-	0.005

Mechanical Properties of HR251

Rp0.2 (MPa)	Rm (MPa)	Impact KV (J)	Elongation A (%)	A Z (%)	Delivery	Hardness HB
564 (≥)	625 (≥)	21	34	13	Solution & Aging, Ann, Ausaging, Q+T	442