This specification2 covers forged or rolled UNS
N06030, UNS N06035, UNS N06022, UNS N06200, UNS
N06059, UNS N06686, UNS N08020, UNS N08024, UNS
N08026, UNS N08367, UNS N10276, UNS N10665, UNS
N10675, UNS N10629, UNS N08031, UNS N06045, UNS
N06025, and UNS R20033* pipe flanges, forged fittings, and
valves and parts intended for corrosive high-temperature service.
Chemical Composition
| Element |
Composition, % |
| UNS N08026 |
UNS N08020 |
UNS N08024 |
UNS N08367 |
UNS R20033 |
| Carbon, max |
0.03 |
0.07 |
0.03 |
0.030 |
0.015 |
| Manganese, max |
1.00 |
2.00 |
1.00 |
2.00 |
2.0 |
| Phosphorus, max |
0.03 |
0.045 |
0.035 |
0.040 |
0.02 |
| Sulfur,max |
0.03 |
0.035 |
0.035 |
0.030 |
0.01 |
| Silicon, max |
0.50 |
1.00 |
0.50 |
1.00 |
0.50 |
| Nickel |
33.00–37.20 |
32.00–38.00 |
35.00–40.00 |
23.50 to 25.50 |
30.0–33.0 |
| Chromium |
22.00–26.00 |
19.00–21.00 |
22.50–25.00 |
20.00 to 22.00 |
31.0–35.0 |
| Molybdenum |
5.00-6.70 |
2.00-3.00 |
3.50-5.00 |
6.00 to 7.00 |
0.50-2.0 |
| Copper |
2.00-4.00 |
3.00-4.00 |
0.50-1.50 |
0.75 max |
0.31-1.20 |
| Columbium (Nb) + tantalum |
... |
8 x carbon-1.00 |
0.15-0.35 |
... |
... |
| Nitrogen |
0.1.16 |
... |
... |
0.18 to 0.25 |
0.35-0.60 |
| Iron |
RemainderA |
RemainderA |
RemainderA |
RemainderA |
RemainderA |
| Element |
Composition, % |
| UNS N06030 |
UNS N06022 |
UNS N06200 |
UNS N10276 |
UNS N10665 |
UNS N10675 |
| Carbon, max |
0.03 |
0.015 |
0.010 |
0.010 |
0.02 |
0.01 |
| Manganese,max |
1.5 |
0.50 |
0.50 |
1.0 |
1.0 |
3.0 |
| Phosphorous,max |
0.04 |
0.02 |
0.025 |
0.04 |
0.04 |
0.030 |
| Sulfur, max |
0.02 |
0.02 |
0.010 |
0.03 |
0.03 |
0.010 |
| Silicon,max |
0.8 |
0.08 |
0.08 |
0.08 |
0.10 |
0.10 |
| Nickel |
RemainderA |
RemainderA |
RemainderA |
RemainderA |
RemainderA |
RemainderA |
| Chromium |
28.0-31.5 |
20.0-22.5 |
22.0-24.0 |
14.5-16.5 |
1.0 max |
1.0-3.0 |
| Molybdenum |
4.0-6.0 |
12.5-14.5 |
15.0-17.0 |
15.0-17.0 |
26.0-30.0 |
27.0-32.0 |
| Copper |
1.0-2.4 |
... |
1.3-1.9 |
... |
... |
0.20 |
| Columbium (Nb) + tantalum |
0.30-1.50 |
... |
... |
... |
... |
... |
| Nitrogen |
... |
... |
... |
... |
... |
... |
| Iron |
13.0-17.0 |
2.0-6.0 |
3.0 max |
4.0-7.0 |
2.0 max |
1.0-3.0 |
| Cobalt,max |
5.0 |
2.5 |
2.0 |
2.5 |
1.0 |
3.0 |
| Tungsten |
1.5-4.0 |
2.5-3.5 |
... |
3.0-4.5 |
... |
3.0 max |
| Vanadium, max |
... |
0.35 |
... |
0.35 |
... |
0.20 |
| Titanium, max |
... |
... |
... |
... |
... |
0.2 |
| Zirconium,max |
... |
... |
... |
... |
... |
0.10 |
| Columbium (Nb) |
... |
... |
... |
... |
... |
0.20 max |
| Tantalum |
... |
... |
... |
... |
... |
0.20 max |
| Nickel+ |
... |
... |
... |
... |
... |
94.0-98.0 |
| Molybdenum |
... |
... |
... |
... |
... |
... |
| Aluminum, max |
... |
... |
0.50 |
... |
... |
0.50 |
| Element |
Composition, % |
| UNS N06059 |
UNS N06686 |
UNS N08031 |
UNS N06045 |
UNS N06025 |
UNS N10629 |
UNS N06035 |
| Carbon, max |
0.010 |
0.010 |
0.015 |
0.05-0.12 |
0.15-0.25 |
0.01 |
0.050 |
| Manganese,max |
0.5 |
0.75 |
2.0 |
1.0 |
0.15 |
1.5 |
0.50 |
| Phosphorous,max |
0.015 |
0.04 |
0.020 |
0.02 |
0.02 |
0.040 |
0.030 |
| Sulfur, max |
0.010 |
0.02 |
0.010 |
0.010 |
0.010 |
0.010 |
0.015 |
| Silicon, max |
0.10 |
0.06 |
0.3 |
2.5-3.0 |
0.5 |
0.05 |
0.60 |
| Nickel |
RemainderA |
RemainderA |
30.0-32.0 |
45.0 min |
RemainderA |
RemainderA |
RemainderA |
| Chromium |
22.0-24.0 |
19.0-23.0 |
26.0-28.0 |
26.0-29.0 |
24.0-26.0 |
0.5-1.5 |
32.25-34.25 |
| Molybdenum |
15.0-16.5 |
15.0-17.0 |
6.0-7.0 |
... |
... |
26.0-30.0 |
7.60-9.00 |
| Copper |
0.50 max |
... |
1.0-1.4 |
0.3 max |
0.1 max |
0.5 |
0.30 max |
| Yttrium |
... |
... |
... |
... |
0.05-0.12 |
... |
... |
| Nitrogen |
... |
... |
0.15-0.25 |
... |
... |
... |
... |
| Iron |
1.5 max |
5.0 max |
RemainderA |
21.0-25.0 |
8.0-11.0 |
1.0-6.0 |
2.00 max |
| Cobalt, max |
0.3 |
... |
... |
... |
... |
2.5 |
1.00 |
| Tungsten |
... |
3.0-4.4 |
... |
... |
... |
... |
0.60 max |
| Vanadium, max |
... |
... |
... |
... |
... |
... |
0.20 |
| Titanium, max |
... |
0.02-0.25 |
... |
... |
0.1-0.2 |
... |
... |
| Zirconium, max |
... |
... |
... |
... |
0.01-0.10 |
... |
... |
| Columbium (Nb) |
... |
... |
... |
... |
... |
... |
... |
|
|
|
|
|
|
|
|
| Tantalum |
... |
... |
... |
... |
... |
... |
... |
| Cerium |
... |
... |
... |
0.03-0.09 |
... |
... |
... |
| Aluminum, max |
0.1-0.4 |
... |
... |
... |
1.8-2.4 |
0.1-0.5 |
0.40 |
Note:
A. Shall be determined arithmetically by difference.
Mechanical Properties
| Alloy |
Tensile Strength, min |
Yield Strength, min |
Elongation in 2 in. or 50 mm, min, % |
Reduction of Area, min, % |
| ksi |
MPa |
ksi |
MPa |
| UNS N08020, UNS N08024, and UNS N08026 |
80 |
551 |
35 |
241 |
30.0 |
50.0 |
| UNS N08367 |
95 |
655 |
45 |
310 |
30.0 |
50.0 |
| UNS R20033 |
109 |
750 |
55 |
380 |
40.0 |
... |
| UNS N06030 |
85 |
586 |
35 |
241 |
30 |
... |
| UNS N06022 |
100 |
690 |
45 |
310 |
45 |
... |
| UNS N06035 |
85 |
586 |
35 |
241 |
30 |
... |
| UNS N06200 |
100 |
690 |
45 |
310 |
45 |
... |
| UNS N10276 |
100 |
690 |
41 |
283 |
40 |
... |
| UNS N10665 |
110 |
760 |
51 |
350 |
40 |
... |
| UNS N10675 |
110 |
760 |
51 |
350 |
40 |
... |
| UNS N06059 |
100 |
690 |
45 |
310 |
45 |
... |
| UNS N06686 |
100 |
690 |
45 |
310 |
45 |
... |
| UNS N08031 |
94 |
650 |
40 |
276 |
40.0 |
... |
| UNS N06045 |
90 |
620 |
35 |
241 |
35 |
... |
| UNS N06025 |
98 |
680 |
39 |
270 |
30 |
... |
| UNS N10629 |
110 |
760 |
51 |
350 |
40 |
... |