ASTM B861

Chemical Requirements | Tensile Requirements | Dimension Requirements

Chemical Requirements

Chemical CompositionComposition Analysis
Grade 1 to 14
ElementGrade
1
Grade
2
Grade
3
Grade
5
Grade
7
Grade
9
Grade
11
Grade
12
Grade
13
Grade
14
Nitrogen, max0.030.030.050.050.030.030.030.030.030.03
Carbon, max0.080.080.080.080.080.080.080.080.080.08
Hydrogen,B,C max0.0150.0150.0150.0150.0150.0150.0150.0150.0150.015
Iron, max0.20.30.30.40.30.250.20.30.20.3
Oxygen, max0.180.250.350.20.250.150.180.250.10.15
Aluminum5.5±6.752.5±3.5
Vanadium3.5±4.52.0±3.0
Tin
Ruthenium0.04±0.060.04±0.06
Palladium0.12±0.250.12±0.25
Molybdenum0.2±0.4
Chromium
Nickel0.6±0.90.4±0.60.4±0.6
Niobium
Zirconium
Silicon
Residuals,D,E,F max each0.10.10.10.10.10.10.10.10.10.1
Residuals,D,E,F max total0.40.40.40.40.40.40.40.40.40.4
TitaniumGbalancebalancebalancebalancebalancebalancebalancebalancebalancebalance
Grade 15 to 24
ElementGrade 15Grade 16Grade 17Grade 18Grade 19Grade 20Grade 21Grade 23Grade 24
Nitrogen, max0.050.030.030.030.030.030.030.030.05
Carbon, max0.080.080.080.080.050.050.050.080.08
Hydrogen,B,C max0.0150.0150.0150.0150.020.020.0150.01250.015
Iron, max0.30.30.20.250.30.30.40.250.4
Oxygen, max0.250.250.180.150.120.120.170.130.2
Aluminum2.5±3.53.0±4.03.0±4.02.5±3.55.5±6.55.5±6.75
Vanadium2.0±3.07.5±8.57.5±8.53.5±4.53.5±4.5
Tin
Ruthenium0.04±0.06
Palladium0.04±0.080.04±0.080.04±0.080.04±0.080.04±0.08
Molybdenum3.5±4.53.5±4.514.0±16.0
Chromium5.5±6.55.5±6.5
Nickel0.4±0.6
Niobium2.2±3.2
Zirconium3.5±4.53.5±4.5
Silicon0.15±0.25
Residuals,D,E,F max each0.10.10.10.10.150.150.10.10.1
Residuals,D,E,F max total0.40.40.40.40.40.40.40.40.4
TitaniumGbalancebalancebalancebalancebalancebalancebalancebalancebalance
Grade 25 to 36
ElementGrade 25Grade 26Grade 27Grade 28Grade 29Grade 33Grade 34Grade 35Grade 36
Nitrogen, max0.050.030.030.030.030.030.050.050.03
Carbon, max0.080.080.080.080.080.080.080.080.04
Hydrogen,B,C max0.01250.0150.0150.0150.0150.0150.0150.0150.0035
Iron, max or range0.40.30.20.250.250.30.30.20±0.800.03
Oxygen, max0.20.250.180.150.130.250.350.250.16
Aluminum5.5±6.752.5-3.55.5-6.54.0±5.0
Vanadium3.5±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±0.080.01-0.020.01-0.02
Molybdenum1.5±2.5
Chromium0.1-0.20.1-0.2
Nickel0.3±0.80.35-0.550.35-0.55
Niobium42.0±47.0
Zirconium
Silicon0.20±0.40
Residuals,D,E,F max each0.10.10.10.10.10.10.10.10.1
Residuals,D,E,F max total0.40.40.40.40.40.40.40.40.4
TitaniumGbalancebalancebalancebalancebalanceRemainderRemainderRemainderRemainder
Upon request and as stated in an order chemical composition checks are performed on a finished product. The table below specifies variations between different laboratories in the measurement of chemical composition content.

Product Analysis Limits, Permissible Variation
max or Range, %in Product Analysis
Aluminum2.5 to 6.7560.4
Carbon0.10.02
Chromium0.1 to 0.26 0.02
Chromium5.5 to 6.56 0.30
Hydrogen0.020.002
Iron0.80.15
Molybdenum0.2 to 0.46 0.03
Molybdenum1.5 to 4.56 0.20
Molybdenum14.0 to 16.060.5
Nickel0.3 to 0.96 0.05
Niobium2.2 to 3.26 0.15
Niobium>3060.5
Nitrogen0.050.02
Oxygen0.30.03
Oxygen0.31 to 0.406 0.04
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 0.406 0.02
Vanadium2.0 to 4.56 0.15
Vanadium7.5 to 8.56 0.40
Zirconium3.5 to 4.56 0.20
ResidualsA (each)0.150.02

Tensile Requirements

GradeTensile Strength, minYield Strength (0.2 % Offset)Elongation 2 in. or 50 mm
ksi(MPa)MinMaxgage length,
ksi(MPa)ksi(MPa)min %
135-24025-17045-31024
250-34540-27565-45020
365-45055-38080-55018
5130-895120-82810
5B160-1103150-10346
750-34540-27565-45020
990-62070-48315
9C90-62070-48312
9D125-860105-72510
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
18C90-62070-48312
18D125-860105-72510
19E115-793110-75915
19B135-930130-897159-109610
19F165-1138160-1103185-12765
20E115-793110-75915
20B135-930130-897159-109610
20F165-1138160-1103185-12765
21E115-793110-75915
21B140-966130-897159-109615
21F170-1172160-1103185-12768
23120-828110-75910
23C120-828110-7597.5G, 6.0H
24130-895120-82810
25130-895120-82810
2650-34540-27565-45020
2735-24025-17045-31024
2890-62070-48315
28C90-62070-48312
28D125-860105-72510
29120-828110-75910
29C120-828110-7597.5G, 6.0H
3350-34540-27565-45020
3465-45055-38080-55018
35130-895120-8285
3665-45060-41095-65510

Permissible Variations in Dimensions

DiameterThicknessLengthStraightness
Nominal Outside Diameter (NPS)APermissible Variations in Outside Diameter
OverUnder
1/8 in. to 11/2 in. (3.2 mm to 38 mm)1/64 in. (0.397 mm)1/32 in. (0.794 mm)
over 11/2 in. to 4 in. (38 mm to 102 mm) 1/321/32 in. (0.794 mm)1/32 in. (0.794 mm)
over 4 in. to 8 in. (102 mm to 203 mm)1/16 in. (1.588 mm)1/32 in. (0.794 mm)
over 8 in. to 18 in. (203 mm to 432 mm)3/32 in. (2.382 mm)1/32 in. (0.794 mm)
ANPS = nominal pipe size
Variation is wall height should be limited to +/- 12.5% of the NPS standard wall thickness.
Pipes should be manufactured to the ordered length with no pipe being more than 6.4mm over the specified length.
Pipe should be free to any bends or kinks with bows not exceeding 1:500 for lengths up to 3m with bow not exceeding 1:400 for lengths greater than 3m.