Super Duplex 2507 (UNS 32750) ASTM A182 2507 ASTM A182 F53 Flange

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What is ASTM A182 grade F53?

It is a forging material specification for 53 grade stainless steel and is used for manufacturing bare forgings or forged and machined products for applications involving high temperature service.

ASTM A182 F53 flanges

ASTM A182 F53 flanges refer to flanges made from super duplex stainless steel 2507 (UNS S32750) by a hot forging process. It is listed in Material Group 2.8 according to ASME B16.5 and ASME B16.47. The pressure-temperature ratings for ASTM A182 F53 flanges are the same as that for other duplex stainless steels. The flanges shall not be used at temperatures over 600°F [315°C] since it may be subject to embrittlement after service at moderately elevated temperatures. ASTM A182 F53 flanges shall be solution annealed after forging at a temperature no less than 1880°F [1025°C], followed by water quenching.

Super Duplex Steel F53 (UNS S32750)

Technical Data Sheet

F53 is a high alloy duplex stainless steel. F53 has excellent resistance to pitting and crevice corrosion resistance compared with the ordinary austenitic or duplex types. Due to this F53 stainless steel is used primarily in highly corrosive conditions.

Chemical Composition Limits
Weight%	C	Mn	P	S	Si	Cr	Ni	Mo	N	Cu
Super Duplex F53	0.03 max	1.2 max	0.035 max	0.015 max	0.8 max	24-26	6-8	3-5	0.3	0.5 max

Typical Mechanical Properties
Alloy	Tensile Strength ksi	Proof Strength 0.2% ksi (min)	Elongation (%) (min)	Hardness Rockwell C
Super Duplex F53 Annealed Condition	110-135	80	15	28 max

ASTM A182 F53 flanges Chemical Composition, %

Cr	Ni	Mo	C	N	Mn
24.0-26.0	6.0-8.0	3.0-5.0	0.030 Max	0.24-0.32	1.20 Max
Si	Cu	P	S	Fe
0.80 Max	0.50 Max	0.035 Max	0.020 Max	Balance

*Nominal composition of ASTM A182 Gr. F53 is 25Cr-7Ni-4Mo-N with P-No. 10H.

Mechanical Properties at Room Temperature

Item	T≤2“	T>2”
Tensile Strength min. MPa [ksi]	785 [114]	730 [106]
Yield Strength min. MPa [ksi]	525 [76]	515 [75]
Elongation in 2″, min. %	30	15
Hardness max. HBW	310	310

*In terms of maximum flange thickness T, the tensile and hardness testing requirements are different for ASTM A182 F53.

C&N is a professional manufacturer of steel forged flange in China, duplex stainless stainless steel : ASTM A182 Duplex F51/F53/F44/F55/F60/F61

Model NO.	ASTM A182 F53 flange	Manufacturing Way	Forging
Duplex Stainless Steel Flange	Uns S32750 Flanges	Duplex Steel	2507
Transport Package	Wooden Case	Specification	B16.5 BAPI605
Trademark	C&N	Origin	China
HS Code	7307910	Production Capacity	600ton/Month