Stainless Steel 317LN Flanges, UNS S31703 Flanges Supplier & Exporter

GENERAL PROPERTIES:-

317L is a molybdenum bearing, low carbon content "L" grade austenitic stainless steel that provides improved corrosion resistance over 304L and 316L stainless steels. The low carbon provides resistance to sensitization during welding and other thermal processes. 317L is non-magnetic in the annealed condition but may become slightly magnetic as a result of welding.

APPLICATIONS:-

• Flue-gas desulfurization systems
• Chemical process vessels
• Petrochemical
• Pulp and Paper
• Condensers in power generation

CORROSION PROPERTIES:-

317LN has excellent corrosion resistance in a wide range of chemicals, especially in acidic chloride environments such as those encountered in pulp and paper mills. Increased levels of chromium, nickel and molybdenum compared to 316LN stainless steel improve resistance to chloride pitting and general corrosion. Resistance increases with molybdenum alloy content. 317LN is resistant to sulfuric acid concentrations up to 5 percent at temperatures as high as 120°F (49°C). At temperatures under 100°F (38°C) this alloy has excellent resistance to solutions of higher concentration. However, service tests are recommended to account for the affects of specific operating conditions that may affect corrosion behavior. In processes where condensation of sulfur-bearing gases occurs, 317LN is much more resistant to attack at the point of condensation than conventional alloy 316. The acid concentration has a marked influence on the rate of attack in such environments and should be carefully determined by service tests.

WELDING:-

317L is readily welded by a full range of conventional welding procedures (except oxyacetylene). AWS E317L/ER317L filler metal or austenitic, low carbon filler metals with molybdenum content higher than that of 317L, or a nickel-base filler metal with sufficient chromium and molybdenum content to exceed the corrosion resistance of 317L should be used to weld 317LN steel.

CHARACTERISTICS:-

• Improved general and localized corrosion to 316L stainless
• Good formability
• Good weldability

CHEMICAL PROPERTIES:-

Ni	Cr	Mo	Mn	Si
11.0 - 15.0	18.0 - 20.0	3.0 - 4.0	2.0 Max	.75 Max
C	N	S	P	Fe
0.03 Max	0.1 Max	0.03 Max	0.045 Max	Balance

MECHANICAL PROPERTIES:-

Ultimate Tensile Strength, ksi Minimum	.2% Yield Strength, ksi Minimum	Elongation Percent	Hardness Max.
75	30	35	217 Brinell

TYPES AND SPECIFICATIONS:

ASME/ANSI B16.5	Welding Neck Flange, Slipon Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Ring Type Joint Flange
Pressure Class	150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B16.47	Welding Neck Flange, Blind Flange (Series A & B)
Pressure Class	75, 150, 300, 400, 600, 900
ASME/ANSI B 16.36	(Orifice Flanges) Welding Neck Flange, Slipon Flange, Threaded Flange
Pressure Class	300, 400, 600, 900, 1500, 2500
BS 4504 SEC 3.1	Welding Flange (111/134), Hubbed Slipon Flange (112), Hubbed Threaded Flange (113), Lapped Pipe End Flange (133), Plate Flange (101), Loose Plate Flange (102), Loose Plate with Weld-neck Flange (104), Blank Flange (105)
Pressure Class	PN 2.5 to PN 100
Din Flanges	DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
Pressure Class	PN 6 to PN 100
ANFOr NFE 29-230	Plate Flange (01), loose Plate Flange (02, 03, 04), Blind Flange (05), Welding Neck flange (11), Hubbed Slip on Flange (12), Screwed Flange (13),Hubbed Socket Welding Flange (14), Loose Hubbed Flange (15) Integral Flange (21)
Pressure Class	Iso - PN 2.5 to PN 40
Pr EN 1092-1 Flanges	Plate Flange (01), Loose Plate Flange (02, 04), Blind Flange (05), Welding Neck Flange (11), Hubbed Slip on flange (12), Screwed Flange (13), Integral Flange (21)
Pressure Class	PN 2.5 to PN 100
ASME/ANSI B 16.9/MSS SP-4	Stub End
Type	A, B, C

Metal	Grade	UNS Number
Austenitic / Ferritic / Austenitic / Stainless Steel	F304 / F304H / F304L * F309* F310* / F310H* F316 / F316H / F316L* F317 / F317L* F321 / F321H* F347 / F347H* F51 (2205)* / F60* F53 (2507)* F446*	S30400 / S30409 / S30403 S30900 S31000 / S31009 S31600 / S31609 / S31603 S31700 / S31703 S32100 / S32109 S34700 / S34709 S31803 / S32205 S32750 S44600
Ferritic / Martensitic Alloys	F1* F5 / F5 A* F6 CL 1, 2, 3, 4, (F410)* F9* F11 CL 1, 2, 3* F22 CL 1, 3* F91* F12 CL 2*	K12822 K41545 / K42544 S41000 K90941 K11597 / K11572 K21590 K90901 K11564
Nickel & Nickel Based Alloys	Nickel 200* Nickel 201* Alloy 400* Alloy 600* Alloy 601 Alloy 625 Alloy 800 / 800H / 800HT* Alloy 825* Alloy 904L* Alloy 20* Alloy C276*	N02200 N02201 N04400 N06600 N06601 N06625 N08800 / N08810 / N08811 N08825 N08904 N08020 N10276
Low Temperature Alloys	LF - 1* LF - 2* LF - 3* A707 L3* A694 F42 - F65* A350 LF6*	K03009 K03011 K32025
Aluminum Alloys	Alum 3003* Alum 6061	A93003 A96061
Copper - Nickel Alloys	70/30 90/10	C71500 C70600

GRADES

ASTM	304/304L/304H, 316/316L/316H, 317/317L, 321/321H, 347/347H, 316Ti, F51
DIN	WNR 1.4541, WNR 1.4571, WNR 1.4301, WNR 1.4306, WNR 1.4307, WNR 1.4401, WNR 1.4404, WNR 1.4438, WNR 1.4462
AFNOR (NF E)	BF Z 3 CN 19-09, BF Z 7 CN 18-09, BF Z 6 CNT 18-10, BF Z 3 CND 17-11-02, BF Z 7 CND 17-11-02, BF Z 6 CNDT 17-12, BF Z 6 CNDNb 18-12

STAINLESS STEEL FLANGES

A wide variety of stainless steel flanges are all available at CCTF, including weld necks, slip-ons, threaded, socket weld, lap joints, blinds, and hub blinds.

GRADES A316/316L and A304/304L

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