12Cr21Ni5Ti 1Cr21Ni5Ti - GJB 2294A-2014

Grade	12Cr21Ni5Ti
Old Grade
Corresponding Standard	GJB 2294A-2014 Specification for Stainless and Heat-Resisting Steel Bars for Aviation
Classification	Duplex Stainless Steel

12Cr21Ni5Ti Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Ti
Minimum Value	0.09	-	-	-	-	20	4.8	0.25
Maximum Value	0.14	0.8	0.8	0.035	0.02	22	5.8	0.5

12Cr21Ni5Ti Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Impact Energy Absorption KV2 J
25 (Group I)	Quenching or Solution Annealing 950~1050°C, air cooling	≥590	≥345	≥20	≥40	≥47
25 (Group II)	Quenching or Solution Annealing 950~1050°C, water quenching; Tempering or Aging 550°C ±10°C hold for 1h, furnace cooling (100°C/h) to 300°C, then air cooling					≥24

New and Old Grade Replacement List

12Cr21Ni5Ti Corresponding Standards(Same grade name, different standards)

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