API Trim Number |
Nominal Trim |
Trim code |
Stem & other trim parts |
Disc/Wedge Surface J |
Seat surface J |
Seating Surface Hardness (HB) Minimum A |
Seat Surface Material Type B |
Seat Surface Typical Specification Guide |
Stem/Bushing |
|
Trim Material Grade |
Cast |
Forged |
Welded M |
Material Type B |
Typical Specifications Type |
Stem Hardness (HB) |
Backseat Bushing Hardness (HB) |
1 |
410 1 |
F6 |
410 (13Cr) (200-275 HBN) |
F6 (13Cr) (200 HBN) |
410 (13Cr) |
250 |
13Cr |
ASTM A217 (CA 15) |
ASTM A182 (F6a) |
|
13Cr |
ASTM A276-T410 or T420 |
200 min 275 max |
250 min |
13Cr-0.75Ni-1Mn |
2 |
304 1 |
304 |
304 |
304 (18Cr-8Ni) |
304 (18Cr-8Ni) |
Note D |
18Cr-8Ni |
N/A |
ASTM A182 (F304) |
AWS A5.9 ER304 |
18Cr-8Ni |
ASTM A276-T304 |
Note D |
Note D |
19Cr-9.5Ni-2Mn-0.08C |
2S |
304 – Hard faced |
304HFS |
304 |
304 (18Cr-8Ni) |
304 (18Cr-8Ni)+St Gr6 |
350 |
Co-Cr A G |
N/A |
ASTM A182 (F304) |
AWS A5.9 ER304 |
18Cr-8Ni |
ASTM A276-T304 |
Note D |
Note D |
19Cr-9.5Ni-2Mn-0.08C |
3 |
310 |
310 |
310 (25Cr-20Ni) |
310 (25Cr-20Ni) |
310 (25Cr-20Ni) Note D |
Note D |
25Cr-20Ni |
N/A |
ASTM A182 (F310) |
AWS A5.9 ER310 |
25Cr-20Ni |
ASTM A276-T310 |
Note D |
Note D |
25Cr-20.5Ni-2Mn |
4 |
410 – Hard (Hard F6) |
F6H |
410 (13Cr) (200-275 HBN) |
F6 (13Cr) (200-275 HBN) |
F6 (13Cr) |
750 E |
Hard 13Cr |
N/A |
Note F |
N/A |
13Cr |
ASTM A276-T410 or T420 |
200 min 275 max |
250 min |
13Cr-0.75Ni-1Mn |
5 |
410 – Full Hard faced |
F6HF |
410 (13Cr) (200-275 HBN) |
St Gr6 (CoCr Alloy) |
St Gr6 (CoCr Alloy) |
350 E |
Co-Cr A G |
N/A |
N/A |
AWS A5.13 ECoCr-A or AWS A5.21 ERCoCr-A |
13Cr |
ASTM A276 T410 or T420 |
200 min 275 max |
250 min |
13Cr-0.5Ni-1Mn/Co-Cr-A |
5a |
410 – Full Hard faced |
F6HF |
410 (13Cr) (200-275 HBN) |
Hardf. NiCr Alloy |
Hardf. NiCr Alloy |
350 E |
Ni-Cr |
N/A |
N/A |
Note H |
13Cr |
ASTM A276 T410 or T420 |
200 min 275 max |
250 min |
13Cr-0.5Ni-1Mn/Co-Cr-A |
6 |
410 (F6) and Cu-Ni |
F6HFS |
410 (13Cr) (200-275 HBN) |
Monel 400® (NiCu Alloy) |
CA15 or CuNi |
250 J |
13Cr |
ASTM A217 (CA 15) |
ASTM A182 (F6a) |
AWS A5.9 ER410 |
13Cr |
ASTM A276 T410 or T420 |
200 min 275 max |
250 min |
13Cr-0.5Ni-1Mn/Ni-Cu |
175 J |
Cu-Ni |
N/A |
Note K |
N/A |
7 |
410 (F6) Hard F6 |
F6HF+ |
410 (13Cr) (200-275 HBN) |
F6 (13Cr) |
F6 (Hard 13Cr) or 13Cr |
250 J |
13Cr |
ASTM A217 (CA 15) |
AWS A5.9 ER410 |
AWS A5.9 ER410 |
13Cr |
ASTM A276 T410 or T420 |
200 min 275 max |
250 min |
13Cr-0.5Ni-1Mo/13Cr-0.5Ni-Mo |
750 J |
Hard 13Cr |
N/A |
Note F |
N/A |
8 |
F6 (410) – Hard faced |
F6HFS |
410 (13Cr) (200-275 HBN) |
410 (13Cr) |
St Gr6 (CoCr Alloy) |
250 J |
13Cr |
ASTM A217 (CA 15) |
ASTM A182 (F6a) |
AWS A5.9 ER410 |
13Cr |
ASTM A276 T410 or T420 |
200 min 275 max |
250 min |
13Cr-0.75Ni-1Mn/1/2Co-Cr-A |
350 J |
Co-Cr A G |
N/A |
N/A |
AWS A5.13 ECo-Cr-A or AWS A5.21 ERCoCr-A |
8a |
F6 (410) – Hard faced |
F6HFS |
410 (13Cr) (200-275 HBN) |
F6 (13Cr) |
Hardf. NiCr Alloy |
250 J |
13Cr |
ASTM A217 (CA 15) |
ASTM A182 (F6a) |
AWS A5.9 ER410 |
13Cr |
ASTM A276 T410 or T420 |
200 min 275 max |
250 min |
13Cr-0.75Ni-1Mn/1/2Co-Cr-A |
350 J |
Ni-Cr |
N/A |
N/A |
Note H |
9 |
Monel |
Monel |
Monel® (NiCu Alloy) |
Monel 400® (NiCu Alloy) |
Monel 400® (NiCu Alloy) |
Note D |
Ni-Cu Alloy |
N/A |
MFG Standard |
N/A |
Ni-Cu Alloy |
MFG Standard |
Note D |
Note D |
70Ni-30Cu |
10 |
316 |
316 |
316 (18Cr-Ni-Mo) |
316 (18Cr-Ni-Mo) |
316 (18Cr-Ni-Mo) |
Note D |
18Cr-8Ni |
ASTM A351 (CF8M) |
ASTM A182 (F316) |
AWS A5.9 ER316 |
18Cr-8Ni-Mo |
ASTM A276-T316 |
Note D |
Note D |
18Cr-12Ni-2.5Mo-2Mn |
11 |
Monel – Hard faced |
MonelHFS |
Monel® (NiCu Alloy) |
Monel 400® (NiCu Alloy) |
Monel 400®+St Gr6 |
Note D |
Ni-Cu Alloy |
N/A |
MFG Standard |
N/A |
Ni-Cu Alloy |
MFG Standard |
Note D |
Note D |
70Ni-30Cu/1/2Co-Cr-A |
350 J |
Co-Cr A G |
N/A |
N/A |
See Trim 5 or 5A |
12 |
316 – Hard faced |
316HFS |
316 (Cr-Ni-Mo) |
316 (18Cr-8Ni-Mo) |
316+St Gr6 |
Note D |
18Cr-*Ni-Mo |
ASTM A351 (CF8M) |
ASTM A182 (F316) |
AWS A5.9 ER316 |
18Cr-8Ni-Mo |
ASTM A276-T316 |
Note D |
Note D |
18Cr-12Ni-2.5Mo-2Mn1/2Co-Cr-A |
350 J |
Co-Cr A G |
N/A |
N/A |
See Trim 5 or 5A |
13 |
Alloy 20 |
Alloy 20 |
Alloy 20 (19Cr-29Ni) |
Alloy 20 (19Cr-29Ni) |
Alloy 20 (19Cr-29Ni) |
Note D |
19Cr-29Ni |
ASTM A351 (CN7M) |
ASTM B473 |
AWS A5.9 ERA20 |
19Cr-29Ni |
ASTM B473 |
Note D |
Note D |
29Ni-19Cr-2.5Mo-0.07C |
14 |
Alloy 20 – Hard faced |
Alloy 20HFS |
Alloy 20 (19Cr-29Ni) |
Alloy 20 (19Cr-29Ni) |
Alloy 20 St Gr6 |
Note D |
19Cr-29Ni |
ASTM A351 (CN7M) |
ASTM B473 |
AWS A5.9 ERA20 |
19Cr-29Ni |
ASTM B473 |
Note D |
Note D |
29Ni-19Cr-2.5Mo-0.07C/1/2Co-Cr-A |
350 J |
Co-Cr A G |
N/A |
N/A |
See Trim 5 or 5A |
15 |
304 – Full Hard faced |
304HF |
304 HF (18Cr-8Ni-Mo) |
304+St Gr6 |
304+St Gr6 |
350 E |
Co-Cr A G |
N/A |
N/A |
AWS A5.13 ECoCr-A or AWS A5.21 ERCoCr-A |
18Cr-8Ni |
ASTM A276-T304 |
Note D |
Note N |
19Cr-9.5Ni-2Mn-0.08C/1/2Co-Cr-A |
16 |
316 – Full Hard faced |
316HF |
316 HF (18Cr-8Ni-Mo) |
316+St Gr6 |
316+St Gr6 |
350 E |
Co-Cr A G |
N/A |
N/A |
AWS A5.13 ECoCr-A or AWS A5.21 ERCoCr-A |
18Cr-8-Ni-Mo |
ASTM A276-T316 |
Note D |
Note N |
18Cr-12Ni-2.5Mo-2Mn/Co-Cr-Mo |
17 |
347 – Full Hard faced |
347HF |
347 HF (18Cr-10Ni-Cb) |
347+St Gr6 |
347+St Gr6 |
350 E |
Co-Cr A G |
N/A |
N/A |
AWS A5.13 ECoCr-A or AWS A5.21 ERCoCr-A |
18Cr-10Ni-Cb |
ASTM A276-T347 |
Note D |
Note N |
18Cr-10Ni-Cb/Co-Cr-A |
18 |
Alloy 20 – Full Hard faced |
Alloy 20 HF |
Alloy 20 (19Cr-29Ni) |
Alloy 20+St Gr6 |
Alloy 20+St Gr6 |
350 E |
Co-Cr A G |
N/A |
N/A |
AWS A5.13 ECoCr-A or AWS A5.21 ERCoCr-A |
19Cr-29Ni |
ASTM B473 |
Note D |
Note N |
19 Cr-29Ni/Co-Cr-A |
19 |
Nickel 1 |
|
|
|
|
Note D |
Ni Alloy |
MFG Standard 1 |
MFG Standard 1 |
MFG Standard |
Ni Alloy 1 |
MFG Standard 1 |
Note D |
Note N |
|
19a |
Alloy 625 |
|
|
|
|
Note D |
Alloy 625 |
ASTM A494 (CW6MC) |
ASTM B564 UNS N06625 |
AWS A5.14 ERNiCrMo-3 |
Alloy 625 |
ASTM B564 UNS N06625 |
Note D |
Note N |
|
19b |
Alloy C276 |
|
|
|
|
Note D |
Alloy C276 |
ASTM A494 (CW2M) |
ASTM B564 UNS N10276 |
AWS A5.14 ERNiCrMo-4 |
Alloy C276 |
ASTM B564 UNS N10276 |
Note D |
Note N |
|
19c |
Alloy 825 |
|
|
|
|
Note D |
Alloy 825 |
ASTM A494 (CU5MCuC) |
ASTM B564 UNS N08825 |
AWS A5.14 ERNiCrMo-3 |
Alloy 825 |
ASTM B564 UNS N08825 |
Note D |
Note N |
|
20 |
Nickel 1 and Hard faced |
|
|
|
|
Note D |
Ni Alloy |
MFG Standard 1 |
MFG Standard 1 |
AWS 5.13 ECoCr-A or AWS 5.21 ECoCr-A |
Ni Alloy 1 |
MFG Standard 1 |
Note D |
Note N |
|
350 J |
Co-Cr A G |
N/A |
N/A |
20a |
Alloy 625 and Hard faced |
|
|
|
|
Note D |
Alloy 625 |
ASTM A494 (CW6MC) |
ASTM B564 UNS N06625 |
AWS A5.14 ERNiCrMo-3 |
Alloy 625 |
ASTM B564 UNS N06625 |
Note D |
Note N |
|
350 J |
Co-Cr A G |
N/A |
N/A |
AWS 5.13 ECoCr-A or AWS 5.21 ECoCr-A |
20b |
Alloy C276 and Hard faced |
|
|
|
|
Note D |
Alloy C276 |
ASTM A494 (CW2M) |
ASTM B564 UNS N10276 |
AWS A5.14 ERNiCrMo-4 |
Alloy C276 |
ASTM B564 UNS N10276 |
Note D |
Note N |
|
350 J |
Co-Cr A G |
N/A |
N/A |
AWS 5.13 ECoCr-A or AWS 5.21 ECoCr-A |
20c |
Alloy 825 and Hard faced |
|
|
|
|
Note D |
Alloy 825 |
ASTM A494 (CU5MCuC) |
ASTM B564 UNS N08825 |
AWS A5.14 ERNiCrMo-3 |
Alloy 825 |
ASTM B564 UNS N08825 |
Note D |
Note N |
|
350 J |
Co-Cr A G |
N/A |
N/A |
AWS 5.13 ECoCr-A or AWS 5.21 ECoCr-A |
21 |
CoCr-A (or CRA) Hard faced Z |
|
|
|
|
350 E |
Co-Cr A G |
N/A |
N/A |
AWS 5.13 ECoCr-A or AWS 5.21 ECoCr-A |
Ni Alloy 1 |
MFG Standard 1 |
Note D |
Note N |
|
Special |
Bronze |
Bronze |
410 (CR13) |
Bronze |
Bronze |
|
|
|
|
|
|
|
|
|
|
Special |
Alloy 625 |
Alloy 625 |
Alloy 625 |
Alloy 625 |
Alloy 625 |
|
|
|
|
|
|
|
|
|
|
NACE |
Specially treated 316 or 410 trim combined with B7M bolts and 2HM nuts to meet NACE MR-01-75 requirements. |
Full Stellite |
Full Hard faced trim, suitable for abrasive & severe services up to 1200ºF (650ºC). |