Stainless Steel 316 Flanges, SS 316L & 316Ti Flanges Supplier

SS 316, 316L, and 316Ti flanges are premium-grade stainless steel components developed for high-performance applications requiring exceptional corrosion resistance, particularly in chloride-rich and marine environments. SS 316 is an austenitic stainless steel alloy containing molybdenum, which significantly enhances its ability to withstand pitting and crevice corrosion in aggressive industrial conditions. SS 316L is the low-carbon variant of 316, designed to improve weldability and minimize the risk of carbide precipitation during fabrication. SS 316Ti incorporates titanium to stabilize the structure during high-temperature exposure, offering superior resistance to intergranular corrosion and improved performance in cyclic thermal conditions. These flanges are available in standard configurations such as weld neck, slip-on, socket weld, blind, and threaded types, meeting specifications across ANSI, ASME, DIN, and JIS standards.

Technical Overview

The key distinction among SS 316, 316L, and 316Ti flanges lies in their alloy modifications and performance under specific service conditions. SS 316, composed of 16–18% chromium, 10–14% nickel, and 2–3% molybdenum, delivers robust mechanical strength and corrosion resistance, particularly in acidic and saline environments. SS 316L, with its reduced carbon content (maximum 0.03%), is especially beneficial in welding applications where preservation of corrosion resistance post-fabrication is critical. SS 316Ti, stabilized with titanium in the range of five times the carbon content, resists carbide precipitation even at elevated temperatures, making it ideal for high-temperature welded systems that require long-term structural stability.

All three variants provide excellent mechanical properties, including high tensile strength, excellent ductility, and strong resistance to stress corrosion cracking and oxidation. These flanges maintain their integrity under elevated pressure and temperature conditions, and they exhibit excellent fabrication characteristics with conventional machining and welding techniques. Their durability and chemical stability make them reliable in systems that face fluctuating thermal and chemical loads. The combination of formability, corrosion resistance, and heat tolerance makes the SS 316 series of flanges a preferred material choice in critical fluid handling systems.

Applications & Industry Use

SS 316/316L/316Ti Stainless Steel flanges are extensively used across industries that demand long-lasting, corrosion-resistant materials in challenging environments. These include sectors such as chemical processing, pharmaceuticals, marine engineering, oil and gas exploration, food and beverage processing, water treatment plants, and pulp and paper manufacturing. The molybdenum content in these flanges provides superior resistance to chlorides, making them ideal for coastal, offshore, and subsea applications. SS 316L flanges are widely used in welded piping systems and pressure vessels, while SS 316Ti is frequently selected for heat exchanger systems, flue gas scrubbers, and high-temperature pipelines where extended thermal exposure is expected.

Our supply network for SS 316, 316L, and 316Ti flanges spans key industrial markets across India, the United Arab Emirates (UAE), the Kingdom of Saudi Arabia (KSA), Kuwait, Qatar, the Sultanate of Oman, Iran, and Iraq. These regions demand high-quality stainless steel components that can perform reliably in harsh operational environments and adhere to international compliance standards. Our flanges are trusted by engineering firms, EPC contractors, and industrial plant operators who prioritize precision, performance, and long-term value in their piping infrastructure.

316/316L/316Ti Stainless Steel Flanges Equivalent Grades

STANDARD	UNS	WNR.	AFNOR	EN	JIS	BS	GOST
SS 316	S31600	1.4401 / 1.4436	Z7CND17‐11‐02	X5CrNiMo17-12-2 / X3CrNiMo17-13-3	SUS 316	316S31 / 316S33	-
SS 316L	S31603	1.4404 / 1.4435	Z3CND17‐11‐02 / Z3CND18‐14‐03	X2CrNiMo17-12-2 / X2CrNiMo18-14-3	SUS 316L	316S11 / 316S13	03Ch17N14M3 / 03Ch17N14M2
SS 316Ti	S31635	1.4571	Z2 NCDU 25-20	X1NiCrMoCu25-20-5	SUS 316Ti	904S13	-

SS 316/316L/316Ti Slip On Flange

Stainless Steel 316 SORF Flanges, UNS S31600 / S31603 / S31635 Slip On Flanges, DIN 1.4401 SORF Flanges, ASME SA 182 SS F304H Slip-on Raised Face Flanges

SS 316/316L/316Ti Weld Neck Flanges

ASME SA182 SS 316L /316Ti WNRF Flanges, ASTM A182 Stainless Steel 316 Weld Neck Flanges, DIN 1.4571 Weld Neck Flanges, UNS S31635 Weld Neck Raised Face Flanges

SS 316/316L/316Ti Blind Flanges

Stainless Steel ASTM A182 F304 Blind Flanges, UNS S31600 / DIN 1.4401 Blind Flanges, ASME SA182 SS 316L BLRF Flanges, SS 316Ti Blind Raised Face Flanges Supplier

SS 316/316L/316Ti Threaded Flanges

DIN 1.4435 Threaded Flanges, UNS S31600 Screwed Flanges, ASME SA 182 Stainless Steel 316L Threaded Flanges, ASTM A182 316Ti SS Threaded Flanges

SS 316/316L/316Ti Socket Weld Flanges

ASTM A182 F304H Stainless Steel Socket Weld Flanges, SS UNS S31600/ S31603/ S31635 Socket Weld Flanges, SS DIN 1.4401 / 1.4436 Socket Weld Flanges

SS 316/316L/316Ti Lap Joint Flanges

UNS S31600 Lap Joint Flanges, Stainless Steel 316 Lap Joint Flanges, ASTM A182 F304L Stainless Steel Lap Joint Flanges, ASME SA 182 SS 316Ti Lap Joint Flanges

SS 316/316L/316Ti Ring Type Joint Flange

UNS S31600 Ring Type Joint Flange, ANSI B16.5 Stainless Steel 316 RTJ Flanges, ASTM A182 F304L Stainless Steel Ring Type Joint Flanges, ASME SA 182 SS 316Ti Ring Type Joint Flanges

SS 316/316L/316Ti Orifice Flanges

UNS S31600 Orifice Flanges, B16.36 Stainless Steel 316 Orifice Flanges, ASTM A182 F304L Stainless Steel Orifice Flanges, ASME SA 182 SS 316Ti Orifice Flanges

SS 316/316L/316Ti Long Weld Neck Flanges

UNS S31635 Long Weld Neck Flanges, Stainless Steel 1.4571 Long Weld Neck Flanges, ASTM A182 F304L Stainless Steel Long Weld Neck Flanges, ASME SA 182 SS 316Ti Long Weld Neck Flanges

SS 316/316L/316Ti Spectacle Blind Flanges

UNS S31603 Spectacle Blind Flanges, ANSI / ASME B16.5 Stainless Steel 316 Spectacle Blind Flanges, ASTM A182 F304L Stainless Steel Spectacle Blind Flanges, SA 182 SS 316Ti Spectacle Blind Flanges

SS 316/316L/316Ti Forged Flanges

UNS S31635 Forged Flanges, B16.5 Stainless Steel 316 Forged Flanges, ASTM A182 F304L Stainless Steel Forged Flanges, ASME SA 182 SS 316Ti Forged Flanges

SS 316/316L/316Ti Plate Flanges

UNS S31600 Plate Flanges, ANSI B16.5 Stainless Steel 316 Plate Flanges, ASTM A182 F304L Stainless Steel Plate Flanges, ASME SA 182 SS 316Ti Plate Flanges

Stainless Steel Flanges Specification :

ASTM A182 / ASME SA182

Dimension Standard :

ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.

Standard :

ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Size :

1/2" (15 NB) to 48" (1200NB)

Class / Pressure :

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Flange Face Type :

Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

DIN Flanges :

DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673.

JIS Flanges :

JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K

BS Flanges :

BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.

Chemical Composition of Stainless Steel 316/316L/316Ti Flanges

	C	Mn	Si	P	S	Cr	Mo	Ni	N
316 (S31600)	0.08 max	2.0 max	0.75 max	0.045 max	0.03 max	min: 16.0 max: 18.0	min: 2.0 max: 3.0	min: 10.0 max: 14.0	0.10 max
316L (S31603)	0.03 max	2.0 max	0.75 max	0.045 max	0.03 max	min: 16.0 max: 18.0	min: 2.0 max: 3.0	min: 10.0 max: 14.0	0.10 max
316TI(S31635)	-	-	-	-	-	16.0	2.00	10.0	-
316TI(S31635)	0.08	2	0.75	0.045	0.03	18.0	3.00	14.0	0.1

Mechanical Properties Of Stainless Steel 316/316L/316Ti Flanges

Grade	Tensile Strength ksi (min)	Yield Strength 0.2% ksi (min)	Elongation %	Hardness (Brinell) MAX	Hardness (Rockwell B) MAX
316 (S31600)	75	30	40	217	95
316L (S31603)	70	25	40	217	95
316TI(S31635)	515(Mpa)	205(Mpa)	35	205	75

Physical Properties of 316/316L/316Ti Stainless Steel Flanges

Density lbm/in3	Thermal Conductivity BTU/h ft. °F	Electrical Resistivity in x 10-6	Modulus of Elasticity psi x 106	Coefficient of Thermal Expansion in/in/°F x 10-6	Specific Heat BTU/lb/°F	Melting Range °F
0.29 at 68°F	100.8 at 68 212°F	29.1 at 68°F	29	8.9 at 32 – 212°F	0.108 at 68°F	2500 to 2550
				9.7 at 32 – 1000°F	0.116 at 200°F
				11.1 at 32 – 1500°F