Codes for High-temperature Alloys

ASME MMPDS
Alloy Section I Section III Section IV Section VIII Section XII B16.5 B16.34 B31.1 B31.3
Class 1 Class 2 Class 3 Classes TC and SC HF-300.2 Div. 1 Div. 2
HAYNES® 25 alloy R30605  – 6.4.1
HAYNES® 188 alloy R30188 6.4.2
HAYNES® 230® alloy N06230
HAYNES® 230-W® alloy N06231
1650°F (899°C)1 Code Case 20631000°F (538°C) Code Case 27561000°F (538°C) to 1250°F (677°C) Water Wetted Code Case 26651300°F (704°C) Molten Salt
500°F (132°C)1
1800°F (982°C)1Code Case 2671External Pressure1800°F (982°C)Code Case 27751650°F (899°C)16
650°F (343°C)1
1500°F (816°C)18
1500°F (816°C)1 1500ºF (816ºC) Code Case 6 Valves, Temp Pressure Rating Increase, Forgings
1650°F (900°C)1
6.3.9
HAYNES® 242® alloy N10242
1000°F (538°C)1
HAYNES® 282® alloy N07208
Code Case 3024 1600°F (870°C)1
Code Case 3024 1600°F (870°C)1
Code Case 219 1600°F (870°C)1
6.3.11
HAYNES® 556® alloy R30556
1650°F (900°C)6
800°F (427°C)16
650°F (343°C)5
1500°F (816°C)17
1500°F (816°C)17
1200°F (649°C)3
HAYNES® 617 alloy N06617 (W86117)
1650°F (900°C)7
1800°F (982°C)7 Code Case 2776 1650°F (899°C)16
1200°F (649°C)7
HAYNES® 625 alloy N06625 (W86112)
Grade 1 1100°F (593°C)1Code Case 2632 1200°F (650°C)12 Grade 2 1100°F (593°C)9 Code Case 1935 1000°F (538°C)9
Grade 1800°F (427°C)9
Grade 1800°F (427°C)9
Grade 1800°F (427°C)4
Grade 1 1200°F (649°C)1 Grade 2 1600°F (871°C)9 1200°F (649°C)16
Grade 1 800°F (427°C) (Bolting) Code Case 2468 800°F (427°C)7
Grade 1 650°F (343°C)1Grade 2 650°F (343°C)10
1200°F (649°C)18
1200°F (649°C)11
1200°F (649°C)1
1200°F (649°C)7
6.3.3
HAYNES® 625SQ® alloy N06626
Code Case 2276 800°F (427°C)13
HAYNES® 718 alloy N07718 6.3.5
HAYNES® HR-120® alloy N08120
1800°F (982°C)2
6.3.10
HAYNES® HR-160® alloy N12160
1800°F (982°C)1
– 
MULTIMET® R30155 (W73155)
Code Case 3058 1600°F (870°C)3
– 
HAYNES® R-41 alloy N07041 –  –  –  –  –  –  –  –  –  –  –  –  6.3.7 
HAYNES® Waspaloy alloy N07001 6.3.8
HASTELLOY® X alloy N06002 (W86002)
800°F (427°C)5
800°F (427°C)5
800°F (427°C)5
800°F (427°C)1
1650°F (900°C)2
900ºF (482ºC)15 1650°F (899°C)5 800°F (427°C)16
650°F (343°C)2
1500°F (816°C)17
1500°F (816°C)14
1500°F (816°C)8
6.3.1
HAYNES® X-750 alloy N07750 6.3.6
1Approved material forms: Plate, Sheet, Bar, Forgings, fittings, welded pipe/tube, seamless pipe/tube
2Approved material forms: Plate, Sheet, Bar, fittings, welded pipe/tube, seamless pipe/tube, Bolting
3Approved material forms: Plate, Sheet, Bar, fittings, welded pipe/tube, seamless pipe/tube
4Approved material forms: Plate, Sheet, Bar, Forgings, welded pipe/tube, seamless pipe/tube
5Approved material forms: Welded pipe/tube, seamless pipe/tube
6Approved material forms: Plate, Sheet, Bar, welded pipe/tube, seamless pipe/tube, Bolting
7Approved material forms: Plate, Sheet, Bar, Forgings, seamless pipe/tube
8Approved material forms: Plate, Sheet, fittings, welded pipe/tube, seamless pipe/tube
9Approved material forms: Plate, Sheet, Bar, seamless pipe/tube
10Approved material forms: Plate, Sheet, Bar, seamless pipe/tube, Bolting
11Approved material forms: Plate, Bar, Forgings, seamless pipe/tube
12Approved material forms: Plate, Sheet, welded pipe/tube
13Approved material forms: Sheet, fittings, welded pipe/tube
14Approved material forms: Plate, Bar, seamless pipe/tube
15Approved material forms: Plate, Sheet, and Rod
16Approved material forms: Bolting only
17Approved material forms: Plate, Bar
18Approved material forms: Plate, Forgings