CHROME MOLY/ALLOY STEEL VALVES F11/F22/F5/F9

Global Supply Line stocks and indents a large range of ‘chrome-moly’ valves. These valves are manufactured from low alloy steel containing chromium and molybdenum making them suitable for higher temperature service especially for higher pressure and temperature combinations. In addition, these valves have the added advantage of anti-corrosive properties. Grades include forged ASTM A182 F5, F5a, F9, F11 and F22, and their cast equivalents ASTM A217 C5, C12, WC5, WC6 and WC9. Higher grades like A112 F9/ASTM A217 C12A are available on an indent basis.

Description

Chrome moly alloy is lightweight but strong, (similar to AISI 4130). With the additions of molybdenum and chromium, chrome moly alloy offers exceptional weldability along with oxidation and scaling resistance.

Design Features

• Resistant to scaling and oxidation
• Harden through heat treatment
• Excellent weldability
• Strong and tough
• Excellent ductility

Applications

• Pressure piping
• Pressure vessels
• Welded tubing applications

Equivalent Grades & Applications

Material Group	Common Name	Type	UNS	Forging Spec.	Casting Spec. Equivalent	DIN	DIN W. No	Application
Low Alloy Steel	Moly Steel	C-1/2Mo	K12822	A182-F1 cl2	A217-WC1	15M03	1.5415	Up to 470ºC* (875ºF)
	Alloy Steel Chrome Moly	1.1/4Cr-1/2Mo	K11572	A182-F11 cl2	A217-WC6	13CRM044	1.7335	Up to 593ºC (1100ºF)
		2.1/4Cr-1Mo	K21590	A182-F22 cl3	A217-WC9	10CRM0910	1.7380	Up to 593ºC (1100ºF), HP steam
		5Cr-1/2Mo	K41545	A182-F5/F5a	A217-C5	12CRMO195	1.7362	High temp refinery service
		9Cr-1Mo	K90941	A182-F9	A217-C12	X 12 CrMo 9 1	1.7386	High temp erosive refinery service
		9Cr-1Mo-V		A182-F91	A217-C12A	X 10 CrMoVNb 9 1	1.4903	High pressure steam

*Not prolonged usage above 425ºC F1, 470ºC WC1, 595ºC F11

Chemical Composition & Mechanical Properties ASTM A182 †

ELEMENT & PROPERTIES	LOW ALLOY STEEL		MEDIUM ALLOY STEEL
	F11 CL2	F22 CL3	F5	F9
CARBON	0.10-0.20	0.05-0.15	0.15 MAX	0.15 MAX
MANGANESE	0.30-0.80	0.30-0.60	0.30-0.60	0.30-0.60
PHOSPHORUS MAX	0.040	0.040	0.03	0.030
SULFUR MAX	0.040	0.040	0.03	0.030
SILICON	0.50-1.00	0.50 MAX	0.50 MAX	0.50-1.00
NICKEL MAX	–	–	0.50	–
CHROMIUM	1.00-1.50	2.00-2.50	4.00-6.00	8.0-10.0
MOLYBDENUM	0.44-0.65	0.87-1.13	0.44-0.65	0.90-1.10
OPPER MA	–	–	–	–
COLUMBIUM MAX	–	–	–	–
VANDIUM MAX	–	–	–	–
TENSILE STRENGTH PSI (MPA)	70,000 (485)	75,000 (515)	70,000 (485)	85,000 (585)
YIELD STRENGTH PSI MIN	40,000 (275)	45,000 (310)	40,000 (275)	55,000 (380)
ELONGATION 2” % MIN	20	20	20	20
REDUCTION AREA % MIN	30	30	35	40
HARDNESS (HB) MAX*	143 ~ 207	156 ~ 207	143 ~ 217	179 ~ 217

The percentage (%) shown on the elements is the maximum, except where ranges are indicated.
† ASTM A182/A182M-13
*NACE MR01-75 specifies 237 maximum brinell hardness

Applications

FORGING SPECIFICATION	COMMON DESIGNATION	MATERIAL SUFFIX	WROUGHT BAR SPECIFICATION	SERVICE RECOMMENDATIONS	COMMON API TRIM # FOR THIS BASE MATERIAL
					150 TO 600 #	900 TO 2500 #
A182 F1	C-1/2 Mo Low Alloy Steel	ASTM A217 Grade WC1	A182 F1 Class 1	Non-corrosive applications Including water, oil and gases at temperatures between: -29 ~ 593ºC* (Not prolonged use > 470ºC).	8 8A 12/12A	5/5A 12 16
A182 F2	0.75% Ni; Mo; 0.75% Cr Low Alloy Steel	ASTM A217 Grade WC5	A182 F2	Non-corrosive applications including water, oil and gases at temperatures F2:-29ºC ~ 538ºC, WC5: -29ºC ~ 575ºC	8 8A 12/12A	5/5A 12 16
A182 F11	1 1/4% Chrome; 1/2% Moly Low Alloy Steel	ASTM A217 Grade WC6	A182 F11 Class 2	Non-corrosive applications including water, oil and gases at temperatures between -30ºC (-20ºF) and +593ºC (+1100ºF).	8 8A 12/12A	5/5A 12 16
A182 F22	2 1/4% Chrome Low Alloy Steel	ASTM A217 Grade WC9	A182 F22 Class 3	Non-corrosive applications including water, oil and gases at temperatures between -30ºC (-20ºF) and +593ºC (+1100ºF).	8 8A 12/12A	5/5A 12 16
A182 F5/F5a	5% Chrome; 1/2% Moly, Medium Alloy Steel	ASTM A217 Grade C 5	A182 F5/F5a	Mild corrosive or erosive applications as well as non-corrosive applications at temperatures between -30ºC (-20ºF) and +650ºC (+1200ºF).	8 8A 12/12A	5/5A 12 16
A182 F9	9% Chrome; 1% Moly, Medium Alloy Steel	ASTM A217 Grade C12	A182 F9	Mild corrosive or erosive applications as well as non-corrosive applications at temperatures between -30ºC (-20ºF) and +650ºC (+1200ºF).	8 8A 12/12A	5/5A 12 16
A182 F91	9% Chrome; 1% Moly; V-N, Medium Alloy Steel	ASTM A217 Grade C12-A	A182 F91	Mild corrosive or erosive applications as well as non-corrosive applications at temperatures between -30ºC (-20ºF) and +650ºC (+1200ºF).	8 8A 12/12A	5/5A 12 16

* Not for prolonged use over 470ºC

Major Categories of Common Valve Materials

FORGED	CAST
CARBON STEEL
ASTM A105N	ASTM A216 WCB/WCC
ASTM A350 LF2	ASTM A352 LCB/LCC
ALLOY STEEL
ASTM A350 LF3	ASTM A352 LC3
ASTM A182 F5A/F5	ASTM A217 C5
ASTM A182 F9	ASTM A217 C12
ASTM A182 F11	ASTM A217 WC6
ASTM A182 F22	ASTM A217 WC9
ASTM A182 F91	ASTM A217 C12A
AUSTENITIC STAINLESS STEEL
ASTM A182 F304/F304L	ASTM A351 CF8/CF3
ASTM A182 F316/F316L	ASTM A351 CF8M/CF3M
ASTM A182 F347	ASTM A351 CF8C
ASTM A182 F321
ASTM A182 F44 (6MO)	ASTM CK3MCuN
ASTM A182 F20* (ALLOY 20)	ASTM A351 CN7M
FERRITIC-AUSTENITIC STAINLESS STEEL
ASTM A182 F51 – UNS S31803 (DUPLEX S.S.)	ASTM A351 CD3MN
ASTM A182 F53 – UNS S32750 (SUPER DUPLEX S.S.)	A890 GR.5A CE3MN*
ASTM A182 F55 – UNS S32760 (SUPER DUPLEX S.S.)	A890 GR.6A CD3MWCuN
NICKEL ALLOY
INCONEL 825 – UNS N08825 ASTM B564-N08825	A484 CU 5MCuC*
INCONEL 600 – UNS N06600 ASTM B564-N06600	A494 CY40*
INCONEL 625 – UNS N06625 ASTM B564-N06625	A494 CW6MC*
MONEL 400 – UNS N04400 ASTM B564-N04400	A494 M35-1
TITANIUM
ASTM B381 GR.F2	ASTM B367 GR.C2
ASTM B381 GR.F3	ASTM B367 GR.C3

*No longer referenced in ASME B16.34-2009