ASTM B863-Titanium and Titanium Alloy Wire- Changzhou Bokang Special Material Technology Co., Ltd

ASTM B863

Titanium and Titanium Alloy Wire

ASTM B863 is a standard specification for titanium and titanium alloy wire. It covers the chemical and mechanical requirements for six grades of titanium and titanium alloy wire, designated as Grades 1, 2, 3, 4,5, 9, and 23. The standard also includes requirements for heat treatment, testing, and inspection of the wire. The wire covered by this standard includes round, rectangular, and shaped wire, in various diameters and cross-sectional areas. The purpose of ASTM B863 is to ensure that titanium and titanium alloy wire produced by manufacturers meet a set of min. requirements for their intended use in various industrial applications, such as aerospace, chemical processing, marine, medical, and power generation industries.

Chemical Composition

Grade	UNS NO.	Composition, %
Grade	UNS NO.	Carbon, max	Oxygen, max	Nitrogen, max	Hydrogen, B, C max	Iron, max	Aluminum	Vanadium	Palladium	Ruthenium	Nickel	Molybdenum	Chromium	Cobalt	Zirconium	Niobium	Tin	Silicon	Other Elements,,max.each	Other Elements,max total	Titanium G
1	UNS R50250	0.08	0.18	0.03	0.015	0.20	...	...	...	...	...	...	...	...	...	...		...	0.1	0.4	balance
2	UNS R50400	0.08	0.25	0.03	0.015	0.30	...	...	...	...	...	...	...	...	...	...		...	0.1	0.4	balance
3	UNS R50550	0.08	0.35	0.05	0.015	0.30	...	...	...	...	...	...	...	...	...	...		...	0.1	0.4	balance
4	UNS R50700	0.08	0.40	0.05	0.015	0.50	...	...	...	...	...	...	...	...	...	...		...	0.1	0.4	balance
5	UNS R56400	0.08	0.20	0.05	0.015	0.40	5.5-6.75	3.5-4.5	...	...	...	...	...	...	...	...		...	0.1	0.4	balance
9	UNS R56320	0.08	0.15	0.03	0.015	0.25	2.5-3.5	2.0-3.0	...	...	...	...	...	...	...	...		...	0.1	0.4	balance
23	UNS R56407	0.08	0.13	0.03	0.0125	0.25	5.5-6.5	3.5-4.5	...	...	...	...	...	...	...	...			0.1	0.4	balance

Mechanical Properties

Grade	Tensile Strength, min		Yield Strength (0.2 % Offset) min or range		Elongation in 4D, min, %	Reduction of Area, min %
Grade	KSI	MPa	KSI	MPa	Elongation in 4D, min, %	Reduction of Area, min %
1	35	240	20	138	20	24
2	50	345	40	275	18	20
3	65	450	55	380	18	18
4	80	550	70	483	15	15
5	130	895	120	828	10	10
9	90	620	70	483	15	15
23	115	793	110	759	10	10

Permissible Variations in Product Analysis

Element	Product Analysis Limits, max or Range, %	Permissible Variation in Product Analysis
Aluminum	0.5 to 2.5	±0.20
Aluminum	2.5 to 6.75	±0.40
Carbon	0.10	﹢0.02
Chromium	0.1 to 0.2	±0.02
Chromium	5.5 to 6.5	±0.30
Hydrogen	0.02	﹢0.002
Iron	0.80	﹢0.15
Iron	1.2 to 1.8	±0.20
Molybdenum	0.2 to 0.4	±0.03
Molybdenum	0.6 to 1.2	±0.15
Molybdenum	1.5 to 4.5	±0.20
Molybdenum	14.0 to 16.0	±0.50
Nickel	0.3 to 0.9	±0.05
Niobium	2.2 to 3.2	±0.15
Niobium	>30	±0.50
Nitrogen	0.05	﹢0.02
Oxygen	0.30	﹢0.03
Oxygen	0.31 to 0.40	±0.04
Palladium	0.01 to 0.02	±0.002
Palladium	0.04 to 0.08	±0.005
Palladium	0.12 to 0.25	±0.02
Ruthenium	0.02 to 0.04	±0.005
Ruthenium	0.04 to 0.06	±0.005
Ruthenium	0.08 to 0.14	±0.01
Silicon	0.06 to 0.50	±0.02
Tin	0.6 to 3.0	±0.15
Vanadium	0.6 to 4.5	±0.15
Vanadium	7.5 to 8.5	±0.40
Zirconium	0.6 to 1.4	±0.15
Zirconium	3.5 to 4.5	±0.20
ResidualsA (each)	0.15	﹢0.02

Permissible Variations in Size for Titanium Wire

Specified Diameter, in. (dimension if shape wire)	Variations, in.
Specified Diameter, in. (dimension if shape wire)	Wire as Coil or on Spools	Cut Straight Lengths A
0.010 to 0.045, incl	±0.001	±0.0015
Over 0.045 to 0.062, incl	±0.0015	±0.002
Over 0.062 to 0.090, incl	±0.002	±0.0025
Over 0.090 to 0.187, incl	±0.003	±0.003
Over 0.187 to 0.250	±0.004	±0.004
Over 0.250 to 0.750	±0.005	±0.005

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