Titanium Plates

The Specification B265 covers the requirements annealed titanium and titanium alloy strip, sheet and plate as follows :

1. Grade 1 - Unalloyed titanium.
2. Grade 2 - Unalloyed titanium.
3. Grade 2H - Unalloyed titanium (Grade 2 with 58 ksi minimum UTS).
4. Grade 3 - Unalloyed titanium.
5. Grade 5 - Titanium alloy (6% aluminium, 4% vanadium)

CHEMICAL REQUIREMENTSA

Element
Grade 1
Grade 2
Grade 2H
Grade 3
Grade 4
Grade 5
Nitrogen, max
0.03
0.03
0.03
0.05
0.05
0.05
Carbon, max
0.08
0.08
0.08
0.08
0.08
0.08
HydrogenB,C, max
0.015
0.015
0.015
0.015
0.015
0.015
Iron, max
0.20
0.30
0.30
0.30
0.50
0.40
Oxygen, max
0.18
0.25
0.25
0.35
0.40
0.20
Aluminium
---
---
---
---
---
5.5 - 6.75
Vanadium
---
---
---
---
---
3.5 - 4.5
Residual,D,E,F max each
0.1
0.1
0.1
0.1
0.1
0.1
Residual,D,E,F max Total
0.4
0.4
0.4
0.4
0.4
0.4
Titanium,G
Balance
Balance
Balance
Balance
Balance
Balance

AAnalysis shall be completed for all elements listed in this table for each grade. The analysis results for the elements not quantified in the table need not be reported unless the concentration level is greater than 0.1% each or 0.4% total.
B Lower hydrogen may be obtained by negotiation with the manufacturer.
C Final product analysis.
DNeed not be reported.
EA residual is an element present in a metal or an alloy in small quantities and is inherent to the manufacturing process but not added intentionally. In titanium these elements include aluminium, vanadium, tin, chromium, molybdenum, niobium, zirconium, hafnium, bismuth, ruthenium, palladium, yttrium, copper, silicon, cobalt, tantalum, nickel, boron, manganese, and tungsten.
FThe purchaser may, in his written purchase order, request analysis for specific residual elements not listed in this specification.
GThe percentage of titanium is determined by difference.

PHYSICAL REQUIREMENTSA

Grade
Tensile Strength, min
Yield Strength, 0.2% Offset
Elongation in 2 in. or 50 mm, min %
Bend Test (Radius of Mandrel)B
ksi
MPa
min
max
Under 0.070 in (1.8 mm) in Thickness
0.070 to 0.187 in. (1.8 - 4.75 mm) in Thickness
ksi
MPa
ksi
MPa
1
35
240
20
138
45
310
24
1.5T
2T
2
50
345
40
275
65
450
20
2T
2.5T
2HC, D
58
400
40
275
65
450
20
2T
2T
3
65
450
55
380
80
550
18
2T
2.5T
4
80
550
70
483
95
655
15
2.5T
3T
5
130
895
120
828
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10 E
4.5T
5T

A Minimum and maximum limits apply to tests taken both longitudinal and transverse to the direction of rolling. Mechanical properties for conditions other then annealed or plate thickness over 1 in. (25 mm) may be established by agreement between the manufacturer and the purchaser.
B Bend to Radius of Mandrel, T equals the thickness of the bend test specimen. Bend tests are not applicable to material over 0.187 in. (4.75 mm) in thickness.
C Material is identical to the corresponding numeric grade (that is, Grade 2H = Grade 2) except for the higher guaranteed minimum UTS, and may always be certified as meeting the requirements of its corresponding numeric grade. Grade 2H, 7H, 16H and 26H are intended primarily for pressure vessel use.
D The H grades were added in response to a user association request based on its study of over 5200 commercial Grade 2, 7, 16 and 26 test reports, where over 99% met the 58 ksi minimum UTS.
E For Grades 5, 6 and 32 the elongation on materials under 0.025 in. (0.635 mm) in thickness may be obtained only by negotitation.