SS316LMod Pipe

1. Standard: ASTM A312, ASTM A213, ASTM A269
2. Size: 1/8”- 48”
3. Thickness: 0.4mm up to 30mm
4. Length: Single, Double Random, Cut Length

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Product Introduction

316LMOD pipe is a modified austenitic stainless steel pipe designed to meet extreme corrosive environments and special industrial needs. The "MOD" in its name stands for "Modified", indicating that the material has significantly improved its overall performance by adjusting the chemical composition and optimizing the manufacturing process on the basis of traditional 316L stainless steel.

ASTM A312 Stainless Steel 316L Mod Pipe Manufacturer, supplier

As a trusted stockist and exporter with a decade and a half of global experience, HT PIPE offers an extensive range of industrial materials: stainless steel 316lmod pipes, sheets, alloy bars, plus precision-engineered fittings, flanges, and couplings. Contact our team for free, customized quotes and product brochures.

Stainless Steel 316L Mod Pipe Specification

Specifications	ASTM A312, ASTM A213, ASTM A269
Standard	ASTM, ASME, and API
Sizes	1/8" to 48"
Thickness	0.4mm up to 30mm
Length	Single, Double Random, Cut Length
Schedule	SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
Types	Seamless / ERW / Welded / EFW / Fabricated / CDW
Form	Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes
End	Plain End, Beveled End, Treaded
Urea Class Stainless Steel-2	304N, 304LN, 316N, 316LN
Urea Class Stainless Steel-1	2re69, 316L Mod, 724L, 725LN

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Features of SS316Lmod pipe

Local corrosion resistance of W.Nr 1.4435

By optimizing the PREN value, its critical pitting temperature (CPT) is 10-15°C higher than that of 316L, and it can withstand higher concentrations of chloride solutions (such as Cl⁻≥20000 ppm).

Stress corrosion cracking (SCC) resistance of ss316lmod

In a chlorine-containing environment at 60-80°C, the SCC resistance is increased by 2-3 times, which is suitable for high-temperature and high-pressure steam systems or coastal petrochemical units.

Mechanical strength of s316lmod

Nitrogen strengthening makes the tensile strength exceed 550 MPa, allowing the design of thinner wall thickness pipes (15-20% thinner than 316L), reducing material costs and system weight.

Weldability of Urea 316L

Low sulfur content reduces the risk of welding hot cracks, and nitrogen-containing welding materials (such as ER316L Mod) can maintain the corrosion resistance of the weld area without post-weld heat treatment.

316L Urea Grade Stainless Steel Pipe Chemical Composition

Grade	UNS	C≤	Mn	P≤	S≤	Si≤	Cr	Mo	Ni	N≤
TP316L	S31603	0.03	2	0.045	0.03	1	16.0-18.0	2.00-3.00	11.0-14.0	0.1

Stainless Steel 316L Modified Physical Properties

Density	7.98 g/cm³
Tensile strength	≥485 MPa
Yield strength (0.2% deviation)	≥170 MPa
Elongation	≥40%
Hardness (Brinell hardness)	≤217 HB
Coefficient of thermal expansion	16.5 x 10^-6/°C (20-100°C)
Thermal conductivity	15.0 W/(m K) (100°C)

Material Testing of 316lmod stainless steel

Hardness Test
Chemical Analysis – Spectro Analysis
Positive Material Identification – PMI Testing
Flattening Test
Micro and MacroTest
Pitting Resistance Test
Flaring Test
Intergranular Corrosion (IGC) Test

Application of s316lmod pipe

Marine engineering and seawater desalination: used for seawater cooling pipelines, reverse osmosis membrane shells and high-pressure pump bodies.

Chemical processing and pharmaceuticals: used as core materials for reactors, heat exchangers and transmission pipelines in chlorinated organic solvents (such as chloroform), acetic acid and mixed acid media.

Energy and environmental protection: used in geothermal fluid transportation, flue gas desulfurization system (FGD) spray pipes and nuclear power plant secondary circuit water purification equipment.

Food and bioengineering: Meets FDA standards and is used for pollution-free transmission of high-cleanliness media (such as fermentation broth and pharmaceutical intermediates).

Economic and sustainability of stainless steel 316lmod

Although the initial cost of 316L Mod is 10-15% higher than that of 316L, its extended service life (increased by more than 50%) and reduced maintenance frequency can significantly reduce the cost of the entire life cycle. In the context of carbon neutrality, its lightweight design (thin-wall) reduces material consumption and transportation carbon emissions, and its 100% recyclable nature meets the requirements of the circular economy.