Trim Designations
API Trim No |
Seat Face |
Wedge Face |
Stem |
BS Designation |
1 |
13 Chrome |
13 Chrome |
13 Chrome |
CR13 |
2 |
304 |
304 |
A276 304 |
18-8 Ti |
3 |
310 |
310 |
A276 310 |
25-20 |
5 |
Stellite 6 facing |
Stellite 6 facing |
A276 410 or 420 |
HF |
6 |
13 Chrome against 30% min nickel facing |
A276 410 or 420 |
CR and Cu-Ni |
8 |
13 Chrome against Stellite 6 facing |
A276 410 or 420 |
CR + HF |
9 |
Monel |
Monel |
Monel |
Ni-Cu |
10 |
316 |
316 |
A276 316 |
18-10-2 |
11 |
Monel against Stellite 6 facing |
Monel |
HF-Ni |
12 |
316 against Stellite 6 facing |
A276 316 |
- |
13 |
Alloy 20 |
Alloy 20 |
B473 |
- |
14 |
Alloy 20 against Stellite 6 facing |
B473 |
- |
15 |
Stellite 6 facing |
Stellite 6 facing |
A276 304 |
- |
16 |
Stellite 6 facing |
Stellite 6 facing |
A276 316 |
- |
- |
347 |
347 |
A276 347 |
18-8 Nb |