ASTM B862

Chemical Requirements

Grade 1 to 14Grade 15 to 24Grade 25 to 36
Element Grade
1
Grade
2
Grade
3
Grade
5
Grade
7
Grade
9
Grade
11
Grade
12
Nitrogen, max 0.03 0.03 0.05 0.05 0.03 0.03 0.03 0.03
Carbon, max 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08
Hydrogen,B,C max 0.015 0.015 0.015 0.015 0.015 0.015 0.015 0.015
Iron, max 0.2 0.3 0.3 0.4 0.3 0.25 0.2 0.3
Oxygen, max 0.18 0.25 0.35 0.2 0.25 0.15 0.18 0.25
Aluminum 5.5±6.75 2.5±3.5
Vanadium 3.5±4.5 2.0±3.0
Tin
Ruthenium
Palladium 0.12±0.25 0.12±0.25
Cobalt
Molybdenum 0.2±0.4
Chromium
Nickel 0.6±0.9
Niobium
Zirconium
Silicon
Residuals Max Each 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Residuals 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TitaniumG balance balance balance balance balance balance balance balance
Element Grade
13
Grade
14
Grade
15
Grade
16
Grade
17
Grade
18
Grade
19
Grade
20
Grade
21
Grade
23
Nitrogen, max 0.03 0.03 0.05 0.03 0.03 0.03 0.03 0.03 0.03 0.03
Carbon, max 0.08 0.08 0.08 0.08 0.08 0.08 0.05 0.05 0.05 0.08
Hydrogen,B,C max 0.015 0.015 0.015 0.015 0.015 0.015 0.02 0.02 0.015 0.0125
Iron, max 0.2 0.3 0.3 0.3 0.2 0.25 0.3 0.3 0.4 0.25
Oxygen, max 0.1 0.15 0.25 0.25 0.18 0.15 0.12 0.12 0.17 0.13
Aluminum 2.5±3.5 3.0±4.0 3.0±4.0 2.5±3.5 5.5±6.5
Vanadium 2.0±3.0 7.5±8.5 7.5±8.5 3.5±4.5
Tin
Ruthenium 0.04±0.06 0.04±0.06 0.04±0.06
Palladium 0.04±0.08 0.04±0.08 0.04±0.08 0.04±0.08
Cobalt
Molybdenum 3.5±4.5 3.5±4.5 14.0±16.0
Chromium 5.5±6.5 5.5±6.5
Nickel 0.4±0.6 0.4±0.6 0.4±0.6
Niobium 2.2±3.2
Zirconium 3.5±4.5 3.5±4.5
Silicon 0.15±0.25
Residuals,D,E,F max 0.1 0.1 0.1 0.1 0.1 0.1 0.15 0.15 0.1 0.1
each
Residuals,D,E,F max 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
total
TitaniumG balance balance balance balance balance balance balance balance balance balance
Element Grade
24
Grade
25
Grade
26
Grade
27
Grade
28
Grade
29
Grade
33
Grade
34
Grade
35
Nitrogen, max 0.05 0.05 0.03 0.03 0.03 0.03 0.03 0.05 0.05
Carbon, max 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08
Hydrogen,B,C 0.015 0.0125 0.015 0.015 0.015 0.015 0.015 0.015 0.015
max
Iron, max or 0.4 0.4 0.3 0.2 0.25 0.25 0.3 0.3 0.20±0.80
range
Oxygen, max 0.2 0.2 0.25 0.18 0.15 0.13 0.25 0.35 0.25
Aluminum 5.5±6.75 5.5±6.75 2.5±3.5 5.5±6.5 4.0±5.0
Vanadium 3.5±4.5 3.5±4.5 2.0±3.0 3.5±4.5 1.1±2.1
Tin
Ruthenium 0.08±0.14 0.08±0.14 0.08±0.14 0.08±0.14 0.02-0.04 0.02-0.04
Palladium 0.04±0.08 0.04±0.08 0.01-0.02 0.01-0.02
Cobalt
Molybdenum 1.5±2.5
Chromium 0.1-0.2 0.1-0.2
Nickel 0.3±0.8 0.35-0.55 0.35-0.55
Niobium
Zirconium
Silicon 0.20±0.40
Residuals,D,E,F 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
max each
Residuals,D,E,F 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
max total
TitaniumG balance balance balance balance balance balance Remainder Remainder Remainder

Tensile Requirements

Yield Strength (0.2 % Offset) Elongation 2
in. or 50 mm
gage length,
min %
min max
Grade ksi (MPa) ksi (MPa) ksi (MPa)
1 35 -240 25 -170 45 -310 24
2 50 -345 40 -275 65 -450 20
3 65 -450 55 -380 80 -550 18
5 130 -895 120 -828 10
5B 60 -1103 150 -1034 6
7 50 -345 40 -275 65 -450 20
9 90 -620 70 -483 15
11 35 -240 25 -170 45 -310 24
12 70 -483 50 -345 18
13 40 -275 25 -170 24
14 60 -410 40 -275 20
15 70 -483 55 -380 18
16 50 -345 40 -275 65 -450 20
17 35 -240 25 -170 45 -310 24
18 90 -620 70 -483 15
19C 115 -793 110 -759 15
19B 135 -930 130 -897 159 -1096 10
19B 165 -1138 160 -1103 185 -1276 5
20C 115 -793 110 -759 15
20B 135 -930 130 -897 159 -1096 10
20B 165 -1138 160 -1103 185 -1276 5
21C 115 -793 110 -759 15
21B 140 -966 130 -897 159 -1096 15
21B 170 -1172 160 -1104 185 -1276 8
23 120 -828 110 -759 10
24 130 -895 120 -828 10
25 130 -895 120 -828 10
26 50 -345 40 -275 65 -450 20
27 35 -240 25 -170 45 -310 24
28 90 -620 70 -483 15
29 120 -828 110 -759 10
33 50 -345 40 -275 65 -450 20
34 65 -450 55 -380 80 -550 18
35 130 -895 120 -828 5

Permissible Variations in Grade Analysis

Element Product Analysis Limits, Max or Range, % Permissible Variation in Product Analysis
Aluminum 2.5 to 6.75 60.4
Carbon 0.1 0.02
Chromium 0.1 to 0.2 60.02
Chromium 5.5 to 6.5 60.3
Hydrogen 0.02 0.002
Iron 0.8 0.15
Molybdenum 0.2 to 0.4 60.03
Molybdenum 1.5 to 4.5 60.2
Molybdenum 14.0 to 16.0 60.5
Nickel 0.3 to 0.9 60.05
Niobium 2.2 to 3.2 60.15
Nitrogen 0.05 0.02
Oxygen 0.3 0.03
Oxygen 0.31 to 0.40 60.04
Palladium 0.01 to 0.02 60.002
Palladium 0.04 to 0.08 60.005
Palladium 0.12 to 0.25 60.02
Ruthenium 0.02 to 0.04 60.005
Ruthenium 0.04 to 0.06 60.005
Ruthenium 0.08 to 0.14 60.01
Silicon 0.06 to 0.40 60.02
Vanadium 2.0 to 4.5 60.15
Vanadium 7.5 to 8.5 60.4
Zirconium 3.5 to 4.5 60.2
ResidualsA (each) 0.15 0.02