ASTM B862

Chemical Requirements

Grade 1 to 14Grade 15 to 24Grade 25 to 36
ElementGrade
1
Grade
2
Grade
3
Grade
5
Grade
7
Grade
9
Grade
11
Grade
12
Nitrogen, max0.030.030.050.050.030.030.030.03
Carbon, max0.080.080.080.080.080.080.080.08
Hydrogen,B,C max0.0150.0150.0150.0150.0150.0150.0150.015
Iron, max0.20.30.30.40.30.250.20.3
Oxygen, max0.180.250.350.20.250.150.180.25
Aluminum5.5±6.752.5±3.5
Vanadium3.5±4.52.0±3.0
Tin
Ruthenium
Palladium0.12±0.250.12±0.25
Cobalt
Molybdenum0.2±0.4
Chromium
Nickel0.6±0.9
Niobium
Zirconium
Silicon
Residuals Max Each0.10.10.10.10.10.10.10.1
Residuals0.40.40.40.40.40.40.40.4
TitaniumGbalancebalancebalancebalancebalancebalancebalancebalance
ElementGrade
13
Grade
14
Grade
15
Grade
16
Grade
17
Grade
18
Grade
19
Grade
20
Grade
21
Grade
23
Nitrogen, max0.030.030.050.030.030.030.030.030.030.03
Carbon, max0.080.080.080.080.080.080.050.050.050.08
Hydrogen,B,C max0.0150.0150.0150.0150.0150.0150.020.020.0150.0125
Iron, max0.20.30.30.30.20.250.30.30.40.25
Oxygen, max0.10.150.250.250.180.150.120.120.170.13
Aluminum2.5±3.53.0±4.03.0±4.02.5±3.55.5±6.5
Vanadium2.0±3.07.5±8.57.5±8.53.5±4.5
Tin
Ruthenium0.04±0.060.04±0.060.04±0.06
Palladium0.04±0.080.04±0.080.04±0.080.04±0.08
Cobalt
Molybdenum3.5±4.53.5±4.514.0±16.0
Chromium5.5±6.55.5±6.5
Nickel0.4±0.60.4±0.60.4±0.6
Niobium2.2±3.2
Zirconium3.5±4.53.5±4.5
Silicon0.15±0.25
Residuals,D,E,F max0.10.10.10.10.10.10.150.150.10.1
each
Residuals,D,E,F max0.40.40.40.40.40.40.40.40.40.4
total
TitaniumGbalancebalancebalancebalancebalancebalancebalancebalancebalancebalance
ElementGrade
24
Grade
25
Grade
26
Grade
27
Grade
28
Grade
29
Grade
33
Grade
34
Grade
35
Nitrogen, max0.050.050.030.030.030.030.030.050.05
Carbon, max0.080.080.080.080.080.080.080.080.08
Hydrogen,B,C0.0150.01250.0150.0150.0150.0150.0150.0150.015
max
Iron, max or0.40.40.30.20.250.250.30.30.20±0.80
range
Oxygen, max0.20.20.250.180.150.130.250.350.25
Aluminum5.5±6.755.5±6.752.5±3.55.5±6.54.0±5.0
Vanadium3.5±4.53.5±4.52.0±3.03.5±4.51.1±2.1
Tin
Ruthenium0.08±0.140.08±0.140.08±0.140.08±0.140.02-0.040.02-0.04
Palladium0.04±0.080.04±0.080.01-0.020.01-0.02
Cobalt
Molybdenum1.5±2.5
Chromium0.1-0.20.1-0.2
Nickel0.3±0.80.35-0.550.35-0.55
Niobium
Zirconium
Silicon0.20±0.40
Residuals,D,E,F0.10.10.10.10.10.10.10.10.1
max each
Residuals,D,E,F0.40.40.40.40.40.40.40.40.4
max total
TitaniumGbalancebalancebalancebalancebalancebalanceRemainderRemainderRemainder

Tensile Requirements

Yield Strength (0.2 % Offset)Elongation 2
in. or 50 mm
gage length,
min %
minmax
Gradeksi(MPa)ksi(MPa)ksi(MPa)
135-24025-17045-31024
250-34540-27565-45020
365-45055-38080-55018
5130-895120-82810
5B60-1103150-10346
750-34540-27565-45020
990-62070-48315
1135-24025-17045-31024
1270-48350-34518
1340-27525-17024
1460-41040-27520
1570-48355-38018
1650-34540-27565-45020
1735-24025-17045-31024
1890-62070-48315
19C115-793110-75915
19B135-930130-897159-109610
19B165-1138160-1103185-12765
20C115-793110-75915
20B135-930130-897159-109610
20B165-1138160-1103185-12765
21C115-793110-75915
21B140-966130-897159-109615
21B170-1172160-1104185-12768
23120-828110-75910
24130-895120-82810
25130-895120-82810
2650-34540-27565-45020
2735-24025-17045-31024
2890-62070-48315
29120-828110-75910
3350-34540-27565-45020
3465-45055-38080-55018
35130-895120-8285

Permissible Variations in Grade Analysis

ElementProduct Analysis Limits, Max or Range, %Permissible Variation in Product Analysis
Aluminum2.5 to 6.7560.4
Carbon0.10.02
Chromium0.1 to 0.260.02
Chromium5.5 to 6.560.3
Hydrogen0.020.002
Iron0.80.15
Molybdenum0.2 to 0.460.03
Molybdenum1.5 to 4.560.2
Molybdenum14.0 to 16.060.5
Nickel0.3 to 0.960.05
Niobium2.2 to 3.260.15
Nitrogen0.050.02
Oxygen0.30.03
Oxygen0.31 to 0.4060.04
Palladium0.01 to 0.0260.002
Palladium0.04 to 0.0860.005
Palladium0.12 to 0.2560.02
Ruthenium0.02 to 0.0460.005
Ruthenium0.04 to 0.0660.005
Ruthenium0.08 to 0.1460.01
Silicon0.06 to 0.4060.02
Vanadium2.0 to 4.560.15
Vanadium7.5 to 8.560.4
Zirconium3.5 to 4.560.2
ResidualsA (each)0.150.02