API600 TRIM NUMBER CHART-STANDARD TRIM CONFIGURATIONS
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API600 TRIM NUMBER CHART-STANDARD TRIM CONFIGURATIONS
API600 TRIM NUMBER CHART
 
STANDARD TRIM CONFIGURATIONS
 
The following table details standard trim materials available. Special trims are available upon request.
 
APITrim
Number
NominalTrim Trimcode Stem&othertrim parts Disc/Wedge Seatsurface TrimMaterialGrade Service
 
1
 
410
 
F6
 
410 (13Cr) (200-275 HBN)
 
F6 (13Cr) (200 HBN)
 
410 (13Cr) (250 HBN min)
 
13Cr-0.75Ni-1Mn
For oil and oil vapors and general services with heat treated seats and wedges. General very low erosive or non-corrosive service between -100ºC and 320ºC.This stainless steel material lends itself readily to hardening by heat treatment and is excellent for contacting parts such as stems, gates, and discs. Steam, gas & general service to 370ºC. Oil & Oil vapor 480ºC.
2 304 304 304 304 (18Cr-8Ni) 304 (18Cr-8Ni) 19Cr-9.5Ni-2Mn-0.08C For moderate pressure in corrosive, low erosive service between -265ºC and 450ºC.
3 310 310 (25Cr-20Ni) 310 (25Cr-20Ni) 310 (25Cr-20Ni) 25Cr-20.5Ni-2Mn For moderate pressure in corrosive or non corrosive service between -265ºC and 450ºC.
4 410 - Hard F6H 410 (13Cr) (200-275 HBN) F6 (13Cr) (200-275 HBN) F6 (13Cr) (275 HBN min) 13Cr-0.75Ni-1Mn Seats 275 BHN min.As trim 1 but for medium pressure and more corrosive service.
5 410 - Full Hard faced F6HF 410 (13Cr) (200-275 HBN) F6+St Gr6(CoCrAlloy) (350 HBN min) 410+St Gr6 (CoCrAlloy) (350 HBN min) 13Cr-0.5Ni-1Mn/Co-Cr-A High pressure slightly erosive and corrosive service between -265ºC and 650ºC and higher pressure. Premium trim service to 650ºC. Excellent for high pressure water and steam service.
5a 410 - Full Hard faced F6HF 410 (13Cr) (200-275 HBN) F6+Hardf. NiCrAlloy (350 HBN min) 410+Hardf. NiCrAlloy (350 HBN min) 13Cr-0.5Ni-1Mn/Co-Cr-A As trim 5 where Co is not allowed.
6 410 and Ni-Cu F6HFS 410 (13Cr) (200-275 HBN) Monel 400® (NiCuAlloy) (250 HBN min) Monel 400® (NiCuAlloy) (175 HBN min) 13Cr-0.5Ni-1Mn/Ni-Cu As trim 1 and more corrosive service.
7 410 - Very hard F6HF+ 410 (13Cr) (200-275 HBN) F6 (13Cr) (250 HBN min) F6 (13Cr) (750 HB) 13Cr-0.5Ni-1M0/13Cr-0.5Ni-1Mo Seats 750 BHN min.As trim 1 but for higher pressure and more corrosive/erosive service.
 
8
 
410 - Hard faced
 
F6HFS
 
410 (13Cr) (200-275 HBN)
 
410 (13Cr) (250 HBN min)
 
410+St Gr6 (CoCrAlloy) (350 HBN min)
 
13Cr-0.75Ni-1Mn/1/2Co-Cr-A
Universal trim for general service requiring long service life up to593ºC.As trim 5 for moderate pressure and more corrosive service. Steam, gas & general service to 540ºC. Standard trim for gate valves.
8a 410 - Hard faced F6HFS 410 (13Cr) (200-275 HBN) F6 (13Cr) (250 HBN min) 410+Hardf. NiCrAlloy (350 HBN min) 13Cr-0.75Ni-1Mn/1/2Co-Cr-A As trim 5a for moderate pressure and more corrosive service
 
9
 
Monel
 
Monel
 
Monel® (NiCuAlloy)
 
Monel 400® (NiCuAlloy)
 
Monel 400® (NiCuAlloy)
 
70Ni-30Cu
For corrosive service to 450ºC such as acids, alkalies, salt solutions, etc. Very corrosive fluids. Erosive-corrosive service between -240ºC and 480ºC. Resistant to sea water, acids, alkalies. Has excellent corrosion resistance in chlorine and alkylation service.
 
10
 
316
 
316
 
316 (18Cr-Ni-Mo)
 
316 (18Cr-Ni-Mo)
 
316 (18Cr-Ni-Mo)
 
18Cr-12Ni-2.5Mo-2Mn
For superior resistance to corrosion for liquids and gases which are corrosive to 410 stainless steel up to 455ºC.As trim 2 but a higher level of corrosive service. Provides excellent resistance to corrosive media at high temperatures and toughness for service at low temperatures. Low temperature service standard for 316SS valves.
11 Monel - Hard faced MonelHFS Monel® (NiCuAlloy) Monel 400® (NiCuAlloy) Monel 400®+St Gr6 (350HBN min) 70Ni-30Cu/1/2Co-Cr-A As trim 9 but for medium pressure and more corrosive service.
11a Monel - Hard faced MonelHFS Monel® (NiCuAlloy) Monel 400® (NiCuAlloy) Monel 400®+HF NiCrAlloy (350 HBN min) 70Ni-30Cu/1/2Co-Cr-A As trim 9 but for medium pressure and more corrosive service.
12 316 - Hard faced 316HFS 316 (Cr-Ni-Mo) 316 (18Cr-8Ni-Mo) 316+St Gr6 (350 HBN min) 18Cr-12Ni-2.5Mo-2Mn1/2Co-Cr-A As trim 10 but for medium pressure and more corrosive service.
12a 316 - Hard faced 316HFS 316 (Cr-Ni-Mo) 316 (18Cr-8Ni-Mo) 316 Hardf. NiCrAlloy (350 HBN min) 18Cr-12Ni-2.5Mo-2Mn1/2Co-Cr-A As trim 10 but for medium pressure and more corrosive service.
13 Alloy 20 Alloy 20 Alloy 20 (19Cr-29Ni) Alloy 20 (19Cr-29Ni) Alloy 20 (19Cr-29Ni) 29Ni-19Cr-2.5Mo-0.07C Very corrosive service. For moderate pressure between -45ºC and 320ºC.
14 Alloy 20 - Hard faced Alloy 20HFS Alloy 20 (19Cr-29Ni) Alloy 20 (19Cr-29Ni) Alloy 20 St Gr6 (350 HBN min) 29Ni-19Cr-2.5Mo-0.07C/1/2Co-Cr-A As trim 13 but for medium pressure and more corrosive service.
14a Alloy 20 - Hard faced Alloy 20HFS Alloy 20 (19Cr-29Ni) Alloy 20 (19Cr-29Ni) Alloy 20 Hardf. NiCrAlloy (350 HBN min) 29Ni-19Cr-2.5Mo-0.07C/1/2Co-Cr-A As trim 13 but for medium pressure and more corrosive service.
15 304 - Full Hard faced 304-HF 304 (18Cr-8Ni-Mo) 304St Gr6 304+St Gr6 (350 HBN min) 19Cr-9.5Ni-2Mn-0.08C/1/2Co-Cr-A As trim 2 but more erosive service & higher pressure.
16 316 - Full Hard faced 316-HF 316 HF (18Cr-8Ni-Mo) 316+St Gr6 (320 HBN min) 316+St Gr6 (350 HBN min) 18Cr-12Ni-2.5Mo-2Mn/Co-Cr-Mo As trim 10 but more erosive service & higher pressure.
17  
347 - Full Hard faced
 
347-HF
 
347 HF (18Cr-10Ni-Cb)
 
347+St Gr6 (350 HBN min)
 
347+St Gr6(350 HBN min)
 
18Cr-10Ni-Cb/Co-Cr-A
As trim 13 but more corrosive service & higher pressure. Combines good corrosion resistance with high temperature resistance up to 800ºC.
18 Alloy 20 - Full Hard faced Alloy 20 HF Alloy 20 (19Cr-29Ni) Alloy 20+St Gr6 (350 HBN min) Alloy 20+St Gr6 (350 HBN min) 19Cr-29Ni/Co-Cr-A As trim 13 but more corrosive service & higher pressure. Water, gas or low pressure steam to 230ºC.
Special Bronze Bronze 410 (CR13) Bronze Bronze   Water, oil, gas, or low pressure steam to 232ºC.
Special Alloy 625 Alloy 625 Alloy 625 Alloy 625 Alloy 625    
NACE Specially treated 316 or 410 trim combined optionally with B7M bolts and 2HM nuts to meet NACE MR-01-75 requirements.
FullStellite Full Hardfaced trim, suitable for abrasive & severe services up to 1200ºF (650ºC).
Important Note: Data provided in this chart is forinformational purposes only.Always consult current API publications toverify information and trim data.Australian Pipeline Valverecommends thatcustomer’s engineers analyse service requirements and specify the materials they consider optimum fortheir service conditions. Temperaturesshown will vary depending on service applications, pressure and media type.

 
 
For technical references and ASTM/ASME cross reference information on stainless,duplex,chromemolyand alloy steel used in valves&piping systems in the petrochemical and refining, please contact us sales@foyovalve.com.
 
We can manufacture exotic grades like Nickel,Super Duplex F55 and Monel(ASTM A494-M35-1),Cd4M-Cu,Hastelloy C(ASTM A494 C12MW), 317(C8G8M) in short lead-time.