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What are the material combinations of the inner parts of American Standard valves?

2022-08-17
Common Valve Materials API 600 Specified Trim Material Combinations

Stem material

Hardness  HB

Seat material

Trim no.

Trim material

Hardness

13Cr

200275

1

13Cr

HB250

4

13Cr

HB750

5 or 5A

HF

HB350

6

13Cr/NiCu

HB750/HB175

7

13Cr/13Cr

HB250/HB750

88A

13Cr/HF

HB250/HB350

18Cr-8Ni

No regulation

2

18Cr-8Ni

No regulation

25Cr-20Ni

3

25Cr-20Ni

Nickel copper alloy

9

Nickel copper alloy

11 or 11A

Nickel copper alloy /HF

No regulation/≥HB350

18Cr-8Ni-Mo

10

18Cr-8Ni-Mo

No regulation

12 or 12A

18Cr-8Ni-Mo/HF

No regulation/≥HB350

19Cr-29Ni

13

19Cr-29Ni

No regulation

14 or 14A

19Cr-29Ni/HF

No regulation/≥HB350


Commonly used trim material combinations

Stem material

Seat material

Stem material

Seat material

13Cr

13Cr/13Cr

321

321/321

13Cr

13Cr/STL

321

321/STL

13Cr

STL/STL

321

STL/STL

13Cr

13Cr/Monel

1Cr18Ni9Ti

1Cr18Ni9Ti/1Cr18Ni9Ti

17-4PH

STL/STL

1Cr18Ni9Ti

1Cr18Ni9Ti/STL

17-4PH

17-4PH/17-4PH

1Cr18Ni9Ti

STL/STL

Monel

Monel/Monel

1Cr18Ni12Mo2Ti

1Cr18Ni12Mo2Ti/1Cr18Ni12Mo2Ti

304

304/304

1Cr18Ni12Mo2Ti

1Cr18Ni12Mo2Ti/STL

304

304/STL

1Cr18Ni12Mo2Ti

STL/STL

304

STL/STL

20号合金

20号合金/20号合金

316

316/316

Hastelloy B

Hastelloy B /Hastelloy B

316

316/STL

Hastelloy C

Hastelloy C /Hastelloy C

316

STL/STL

F51

F51/F51

304L

304L/304L

F51

F51/STL

304L

304L/STL

38CrMoALA

STL/STL

304L

STL/STL

25Cr2MoIV A

STL/STL

316L

316L/316L

4Cr10Si2Mo

STL/STL

316L

316L/STL

4Cr14Ni14W2Mo

STL/STL

316L

STL/STL

Inconel

Inconel/Inconel

 

Common Fastener Materials

Bolt

Nut

Tempreature max

Bolt

Nut

Tempreature max

35

25

425

0Cr18Ni9

0Cr18Ni9

600

35CrMo

3545

425

0Cr17Ni12Mo2

0Cr17Ni12Mo2

600

35CrMo

30CrMo

500

25Cr2Mo1VA

25Cr2MoVA

600

25Cr2MoVA

30CrMo

550

25Cr2MoVA

35CrMo

600


American standard valve bolt and nut material pairing

Bolt

Nut

Applicable range

Standard

designation

Standard

designation

ASTM A 193

B7

ASTM A 194

2H

-29425

B7M

2HM

 

-29 to 425 ° C operate NACE standard anti-sulfur valves

 

 

B16

7

-29593

B8

8

-196700

B8M

8M

ASTM A 320

L7

4

-46101low temperature valve


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