API 600 Valve Material Selection Guide

API 600 valve body, bonnet, and cover materials (ASME B16.34, Material Groups 1, 2, and 3) along with associated valve trim materials (trim numbers, Table 8) and ASTM A193 and ASTM A194 specification bolting materials.

Annex D

(informative)

Valve Material Combinations

Table D.1, Table D.2, and Table D.3 list valve body, bonnet, and cover materials (ASME B16.34, Material Groups 1, 2, and 3) along with associated valve trim materials (trim numbers, Table 8) and ASTM A193 and ASTM A194 specification bolting materials. For ASTM A193 and ASTM A194 listed bolting materials in Table D.1 and Table D.2, corresponding bolting materials listed in EN 10269 may be substituted in accordance with Table D.4.

Table D.1—Material Combinations for Group 1 Body, Bonnet, and Cover Materials

Material Group ASME B16.34	Body/Bonnet Material Abbreviation	Body, Bonnet, and Cover ASTM Specification	Trim Material CN Designation	Body-to-Bonnet and Body-to-Cover Bolting ASTM Specification
1.1	C-Si, C-Mn-Si C-Mn-Si-V 3-1/2 Ni	A105 or A216-WCB A350-LF2-CL1 A350-LF6-CL1 A350-LF3	8, 8A 8, 8A 10 10	B7/2H, B7M/2HM B7/2H ^b B8M-CL2/8M ^{b c d} B8M-CL2/8M ^{b c d}
1.2	C-Mn-Si C-Mn-Si-V 2-1/2Ni 3-1/2Ni	A216-WCC A352-LCC A350-LF6-CL2 A352-LC2 A352-LC3	8, 8A 8, 8A 10 10 10	B7/2H,B7M/2HM B7/2H, B7M/2HM B8M-CL2/8M ^{b c d} B8M-CL2/8M ^{b c d} B8M-CL2/8M ^{b c d}
1.3	C-Si C-1/2Mo	A352-LCB A217-WC1 A352-LC1	8, 8A 8, 8A 10	B7/2H, B7M/2HM B7/2H, B7M/2HM B8M-CL2/8M ^{b c d}
1.4	C-Mn-Si	A350-LF1	8	B7/2H, B7M/2HM
1.5	C-1/2Mo	A182-F1	8	B7/2H, B7M/2HM
1.7	1/2Cr-1/2Mo NI-1/2Cr-1/2Mo 3/4Ni-3/4Cr-1Mo	A182-F2 A217-WC4 A217-WC5	8	B7/2H, B7M/2HM
1.9	11/4Cr-1/2Mo 11/4Cr-1/2Mo-Si	A217-WC6 A182-F11-CL2	8	B16/8M ^e
1.10	21/4Cr-1Mo	A182-F22-CL3 A217-WC9	8	B16/8M ^e
1.13	5Cr-1/2Mo	A182-F5a or A217-C5	8	B16/8M^e
1.14	9Cr-1 Mo	A182-F9 or A217-C12	8	B16/8M ^e
1.15	9Cr-1Mo-V	A182-F91-Type1 A217-C12A	8	B16/8M ^e
1.17	1Cr-1/2Mo 5Cr-1/2Mo	A182-F12-CL2 A182-F5	8	B16/8M ^e
NOTE 1 For Table D.1 table notes, see Table D.2. NOTE 2 For bolting materials in accordance with EN 10269, see Table D.4. NOTE 3 When substituting bolting materials (e.g., austenitic or Group 3 materials) for those recommended in this table, consideration should be given to the changes in material stress strain properties and differential thermal expansion between bolting and other joint components, which may result in reduced joint tightness.

Table D.2—Material Combinations for Group 2 Body, Bonnet and Cover Materials

Material Group ASME B16.34	Body/Bonnet Material Abbreviation	Body, Bonnet, and Cover ASTM Specification	Trim Material CN Designation	Body-to-Bonnet and Body-to-Cover Bolting ASTM Specification ^a
2.1	18Cr-8Ni	A182-F304/A351-CF3 A182-F304H/A351-CF8	Note ^f	B8M-CL2/8M ^{c d}
2.2	16Cr-12Ni-2Mo 18Cr-8Ni 18CR-13Ni-3Mo 19Cr-10Ni-3Mo	A182-F316 or A351-CF3M, A182-F316H or A351-CF8M A351-CF3A or A351-CF8A A182-F317 A351-CG8M	10	B8M-CL2/8M ^{c d}
2.3	18Cr-8Ni 16Cr-12Ni-2Mo	A182-F304L A182-F316L	10	B8M-CL2/8M ^{c d}
2.4	18Cr-10Ni-Ti	A182-F321 A182-F321H	10	B8M-CL2/8M ^{c d}
2.5	18Cr-10Ni-Cb	A182-F347H A182-F347 A182-F348 A182-F348H	10	B8M-CL2/8M ^{c d}
2.7	25Cr-20Ni	A182-F310	10	B8M-CL2/8M ^{c d}
2.8	20Cr-18Ni-6Mo 22Cr-5Ni-3Mo-N 25Cr-7Ni-4Mo-N 24Cr-10Ni-4Mo-V 25Cr-5Ni-2Mo-3Cu 25Cr-7Ni-3.5MO-W-Cb 25Cr-7Ni-3.5Mo-N-Cu-W	A182-F44 A351-CK3MCuN A182-F51 A182-F53 A351-CE8MN A351- CD4MCu A351-CD3MWCuN A182-F55	Note ^f	B8M-CL2/8M ^{c d}
2.10	25Cr-12Ni	A351-CH8 A351-CH20	Note ^f	B8M-CL2/8M ^{c d}
2.11	18Cr-10Ni-Cb	A351-CF8C	Note ^f	B8M-CL2/8M ^{c d}
2.12	25Cr-20Ni	A351-CK20	Note ^f	B8M-CL2/8M ^{c d}
NOTE 1 For bolting materials in accordance with EN 10269, see Table D.4. NOTE 2 When substituting bolting materials (e.g. austenitic or group three materials) for those recommended in this table, consideration should be given to the changes in material stress strain properties and differential thermal expansion between bolting and other joint components, which may result in reduced joint tightness.
Superscript notes below apply to Table D.1 and Table D.2
^a Temperature limitations on bolting are as follows: Gr B7, 538 °C (1000 °F); Gr L7, 538 °C (1000 °F); Gr B16, 595 °C (1100 °F); Gr B8-CL1, Gr B8A-CL1A, Gr B8M-CL1,and Gr B8MA-CL1A, 816 °C (1500 °F); Gr B8- CL2, Gr B8M-CL2, Gr B8M2-CL2B and Gr B8M3- CL2C, 538 °C (1000 °F). ^b ASTMA320, Gr L7 bolts and ASTM A194, Gr 7 nuts may also be used. ^c ASTM A193, Gr B8-CL1, Gr B8A-CL1A, Gr B8M-CL1, Gr B8MA-CL1A, Gr B8M2-CL2B, and Gr B8M3-CL2C bolting is a suitable substitute provided that the requirements of 5.5.8 are met. Substituting with class 1 bolting may result in derating of the valve. ^d ASTM A193, Gr B8-CL2 bolts may also be used. ^e ASTMA194, Gr 7 nuts may also be used. ^fTrim material is not specified; however, trim materialshall have corrosion resistance equal to the corrosion resistance of the valve body material.

Table D.3—Material Combinations for Group 3 Body, Bonnet, and Cover Materials

Material Group ASME B16.34	Body/Bonnet Material Abbreviation	Body, Bonnet, and Cover ASTM Specification	Trim Material CN Designation	Body to Bonnet and Body to Cover Bolting ASTM Specification ^ab
3.1	35Ni–35Fe–20Cr–Cb	B462 N08020	13, 14	B473 N08020
3.2	99Ni	B564 N02200	19, 20	B164 N04400 ^d

Table D.3—Material Combinations for Group 3 Body, Bonnet, and Cover Materials (Continued)

Material Group ASME B16.34	Body/Bonnet Material Abbreviation	Body, Bonnet, and Cover ASTM Specification	Trim Material CN Designation	Body to Bonnet and Body to Cover Bolting ASTM Specification ab
3.4	67Ni-30Cu 67Ni-30Cu-S	B564 N04400/A494 M-35–1 A494 M-35–2	9, 11	B164 N04400 ^d
3.5	72Ni–15Cr–8Fe	B564 N06600	19, 20	B166 N06600 ^c
3.6	33Ni–42Fe–21Cr	B564 N08800	19, 20	B408 N08800 ^e
3.7	65Ni-28Mo-2Fe 64Ni-29.5Mo-2Cr-2Fe-Mn-W	B462 N10665 B564 N10665 B462 N10675 B564 N10675	19, 20	B335 N10665 d B335 N10675 ^d
3.8	54Ni-16Mo-15Cr	B462 N10276	19B, 20B	B574 N10276
	60Ni-22Cr-9Mo-3.5Cb 42Ni-21.5Cr-3Mo-2.3Cu	B564 N06625 B564 N08825	19A, 20A 19C, 20C	B637 N07718 B637 N07718
	55Ni-21Cr-13.5Mo 55Ni-23Cr-16Mo-1.6Cu	B462 N06022 B462 N06200	19, 20 19, 20	B574 N10276 B574 N10276
3.12	46Fe-24Ni-21Cr-6Mo-Cu-N 58Ni-33Cr-8Mo	B462 N08367/A351 CN3MN B462 N06035	19, 20	B637 N07718
3.13	Ni–Fe–Cr–Mo–Cu–Low C	B564 N08031	19, 20	B574 N10276 B574 N06022
3.14	40Ni–29Cr–15Fe–5Mo	B462 N06030	19, 20
3.15	42Ni–2Fe–21Cr Ni–Mo Ni–Mo–Cr	B564 N08810 A494 N-12MV A494 CW-12MW	19, 20	B408 N08800 ^e B574 N10276
3.17	29Ni–201∕2Cr–31∕2Cu–21∕2Mo	A351 CN7M	19, 20	B574 N10276
3.19	57Ni–22Cr–14W–2Mo–La	B564 N06230	19, 20	B408 N08800 ^e
NOTE 1 If alternative bolting material are used, temperature limitation from Table D.2 is applicable NOTE 2 When substituting bolting materials (e.g. austenitic or group three materials) for those recommended in this table, consideration should be given to the changes in material stress strain properties and differential thermal expansion between bolting and other joint components, which may result in reduced joint tightness.
^a Bolting materials are suggested to help with material selection, ASTM A193, B8M-CL1 and Gr B8M-CL2 bolting are acceptable as agreed between Manufacture and Purchaser provided requirements in 5.5.8 and 5.5.9 are met. ^b All bolting shall have similar coefficient of thermal expansion to the body and bonnet material. ^cMaterial specifications have maximum diameter limit of 2.5 in. ^d Material specifications have maximum diameter limit of 3.5 in. ^e Materials have yield strength below 50ksi, alternative higher strength bolting may be required to satisfy joint design requirements.

Table D.4—Alternative Body to Bonnet Bolting Materials

As Related to Table D.1 and Table D.2		As Related to Table Notes in Table D.1 and Table D.2
ASTM Bolting Material	EN 10269 Bolting Material Grade	ASTM Bolting Material	EN 10269 Bolting Material Grade
A193 B7 A193 B16	42CrMo4 (1.7225)—QT 40CrMoV4–6 (1.7711)—QT	A193 B8M2, CL 2B A193 B8M3, CL 2C	X5CrNiMo 17–12–2 (1.4401)—C700 X5CrNiMo 17–12–2 (1.4401)—C700
A193 B8M, CL 2 A194 2H	X5CrNiMo 17–12–2 (1.4401)— C700 C45E (1.1191)—QT	A193 B8M, CL 1 A193 B8MA, CL 1A	X5CrNiMo 17–12–2 (1.4401)—AT X5CrNiMo 17–12–2 (1.4401) —AT

Table D.4—Alternative Body to Bonnet Bolting Materials (Continued)

As Related to Table D.1 and Table D.2		As Related to Table Notes in Table D.1 and Table D.2
ASTM Bolting Material	EN 10269 Bolting Material Grade	ASTM Bolting Material	EN 10269 Bolting Material Grade
A194 8M	X5CrNiMo 17–12–2 (1.4401)—AT	A193 B8, CL 1 A193 B8A, CL 1A	X5CrNi 18–10 (1.4301)—AT X5CrNi 18–10 (1.4301)—AT
		A193, B8 CL 2 A320, L7	X5CrNi 18–10 (1.4301)—C700 42CrMo4 (1.7225)—QT
		A194 GR 8	X5CrNi 18–10 (1.4301)—AT
		A194 GR 7	42CrMo4 (1.7225)—QT
NOTE Temperature limitations applicable for ASTM bolting materials, table notes for Table D.2, also apply for corresponding substitute EN bolting materials.