Grade 21 R58210 - ASTM B348-2013

Grade	Grade 21
USA UNS	R58210
Corresponding Standard	ASTM B348-2013 Standard Specification for Titanium and Titanium Alloy Bars and Billets
Classification	Titanium and Titanium Alloys
Properties	Corrosion Resistance

Grade 21 Chemical Element Composition Content (%)

Component	Fe	C	Si	Mo	N	Nb	Al	H	O	Other Individual	Other Total
Minimum Value	-	-	0.15	14	-	2.2	2.5	-	-	-	-
Maximum Value	0.4	0.05	0.25	16	0.03	3.2	3.5	0.015	0.17	0.1	0.4

"Other individual elements or other totals": The chemical composition includes elements not specified in the table. Analysis should only be conducted if these elements are suspected to be present, or if routine analysis suggests that their content may exceed the prescribed limits.

Grade 21 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
Bars, billets; d≤76; S≤64.5	Solid Solution	≥793	≥759	≥15	≥35
Bars, billets; d≤76; S≤64.5	Solution + Aging - Medium Strength (Depends on Aging Temperature)	≥966	897~1096	≥10	≥30
Bars, billets; d≤76; S≤64.5	Solution + Aging - High Strength (Depends on Aging Temperature)	≥1172	1104~1276	≥8	≥20

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!