HR51

HR51 Stainless Steels to BS 2HR 51 (2010)

HR51 - Specification & Application

• BS 2HR 51 (2010) - Specification for high expansion heat-resisting steel billets, bars, forgings and parts (Ni 25.5, Cr 15, Ti 2, Mn 1.5, Mo 1.25, Si 0.7, V 0.3)(Solution treated at 980 °C)
• BS HR 51 - Specification for heat-resisting alloy billets, bars, forgings and parts (Ni 25.5, Cr 14.7, Ti 2, Mn 1.5, Mo 1.2, Si 0.7, V 0.3, Fe remainder)

Specification for heat-resisting alloy billets, bars, forgings and parts (Ni 25.5, Cr 14.7, Ti 2, Mn 1.5, Mo 1.2, Si 0.7, V 0.3, Fe remainder)

Chemical composition(wt.%) of HR51 grade: to BS 2HR 51 (2010)

HR51 - Detail

Specification for heat-resisting alloy billets, bars, forgings and parts (Ni 25.5, Cr 14.7, Ti 2, Mn 1.5, Mo 1.2, Si 0.7, V 0.3, Fe remainder)

Mechanical properties of grade HR51 BS 2HR 51 (2010)

Proof strength Rp0.2 (MPa)	Tensile strength Rm (MPa)	Impact energy KV (J)	Elongation at fracture A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
275 (≥)	157 (≥)	31	41	21	Solution and Aging, Annealing, Ausaging, Q+T,etc	222

Physical properties of grade HR51 BS 2HR 51 (2010)

Property	Density kg/dm3	Temperature T °C/F	Specific heat J / kgK	Thermal conductivity W/mK	Electric resistance µΩ·cm	Modulus of elasticity kN/mm2	Expansion rate
792 (≥)	445 (≥)	44	42	24	Solution and Aging, Annealing, Ausaging, Q+T,etc	333
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
327	863	815