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China Suppliers Factory ASTM A269/270/213 TP316L Stainless Steel Seamless Tubes for Fast Delivery

At ZONSUN STEEL, we are a leading supplier and factory specializing in the export of ASTM A269/270/213 TP316L stainless steel seamless tubes from China. We adhere to international standards to ensure the highest quality in our products. Our extensive stock is available for immediate shipment, guaranteeing fast delivery to meet your needs. Trust us as your reliable partner for top-quality stainless steel solutions

Product Detail

Introduction

ASTM A269 TP316L is the low-carbon variant of TP316, designed to eliminate intergranular corrosion (IGC) risks in welded components and sensitized structures. With a carbon content ≤0.035%, it avoids chromium carbide precipitation at grain boundaries, making it ideal for applications where post-weld heat treatment is impractical or corrosive conditions are extremely severe. The inclusion of 2.0–3.0% molybdenum (Mo) ensures superior resistance to pitting, crevice corrosion, and chemical attack, similar to TP316 but with enhanced weldability for critical environments.

Key Features

🛡️ Low-Carbon Immunity to Intergranular Corrosion (IGC)

Carbon ≤0.035% means no chromium carbide (Cr23C6) precipitates at grain boundaries, even after welding or long-term exposure to sensitization temperatures. No post-weld heat treatment is required for most applications, reducing fabrication costs.

🧪 Molybdenum-Enhanced Localized Corrosion Resistance

Equivalent to TP316 in resistance to pitting/crevice corrosion in chloride environments (e.g., seawater, brine, or bleach solutions), making it suitable for harsh chemical processing.

⚡ Superior Weldability

Ideal for welded structures (e.g., pipelines, storage tanks) where heat-affected zones (HAZ) would otherwise become IGC-prone in higher-carbon grades. Commonly used in industries where non-destructive testing (NDT) of welds is critical but post-weld annealing is not feasible.

🌡️ Wide Temperature Range Performance

Maintains ductility and toughness from cryogenic (−196°C, e.g., liquid nitrogen systems) to high-temperature service (up to ~650°C continuously, ~870°C short-term).

💎 Austenitic Microstructure Purity

Fully austenitic matrix (no harmful phases like σ-phase) after solution annealing, ensuring uniform corrosion resistance and formability.

Material Specification

Standard

ASTM A269 & A270 & A213

O.D

1/8" NB TO 32" NB, (10.29MM-812.80MM), (Customization Available)

W.T

SCH 10S, SCH 40S, SCH 80S, SCH160, SCH XXS (Customization Available)

Application

Sanitary & Hygienic Systems
Food and Beverage Processing
Semiconductor & Electronics
Food & Dairy Plants
Pharmaceutical Plant
Maritime & Offshore Applications
Medical & Laboratory Equipment

End

Plain End, Beveled End, Threaded

Processing

Cut-to-length; Polishing.

Inspection

100% PMI TESTED
EN10204.3.1B MILL TEST CERTIFICATE
THIRD PARTY INSPECTION ACCEPTED

Delivery Condition

Cold Drawn, Annealed and Pickled / Polished / Bright Annealed / Sand blasting / Shot Blasting.

Marking

All SS SMLS Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or as per the customer’s request)

Packing

Packed in Wooden Boxes, plywood cases, Steel Strips Bundled, or as per Customers Requests

Specials

Sizes and Specifications other than above can be customized on request.

Specification Parameters

CHEMICAL COMPOSITION - TP316L (ASTM A269/A269M)

HEAT NO.		CHEMICAL COMPOSITION (%)
HEAT NO.		C	Mn	P	S	Si	Ni	Cr	Mo
STAND.	MIN.						10.00	16.00	2.0
STAND.	MAX.	0.035^B	2.00	0.045	0.030	1.00	15.00	18.00	3.0

CHEMICAL COMPOSITION - TP316L (ASTM A213 & 270)

HEAT NO.		CHEMICAL COMPOSITION (%)
HEAT NO.		C	Mn	P	S	Si	Ni	Cr	Mo
STAND.	MIN.						10.00	16.00	2.0
STAND.	MAX.	0.035^D	2.00	0.045	0.030	1.00	14.00	18.00	3.0

Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness MAX
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Rockwell (HRB)	Brinell (HBW)
ASTM A269 TP316L				90	192
ASTM A213 TP316L	485	170	35	90	192
ASTM A270 TP316L	485	170	35	B90

Equivalent Grades

USA (ASTM / AISI)	Germany (DIN, WNr)	Japan (JIS)	France (AFNOR)	England (BS)	Euronorms (EN)	China (GB)	International (ISO)
TP316L 316L S31603	1.4404	SUS316L	Z2CND17-12	316S11	X2CrNiMo17-12-2	022Cr17Ni12Mo2	X2CrNiMo17-12-2 S31603

ASTM A269/A269M Standard Cold Machining Size Deviation Permitted

Group	Size, Outside Diameter, in. [mm]	Permissible Variations in Outside Diameter, in. [mm]	Permissible Variations in Wall Thickness, A %	Permissible Variations in Cut Length, in. [mm] B		Thin Walled Tubes C
Group	Size, Outside Diameter, in. [mm]	Permissible Variations in Outside Diameter, in. [mm]	Permissible Variations in Wall Thickness, A %	Over	Under	Thin Walled Tubes C
1	Up to 1/2 [13]	±0.005 [0.13]	±15	1/8 [3.2]	0	...
2	1/2 to 1 1/2 [13 to 38], excl	±0.005 [0.13]	±10	1/8 [3.2]	0	less than 0.065 in. [1.65 mm] nominal
3	1 1/2 to 3 1/2 [38 to 89], excl	±0.010 [0.25]	±10	3/16 [4.8]	0	less than 0.095 in. [2.41 mm] nominal
4	3 1/2 to 5 1/2 [89 to 140], excl	±0.015 [0.38]	±10	3/16 [4.8]	0	less than 0.150 in. [3.81 mm] nominal
5	5 1/2 to 8 [140 to 203], excl	±0.030 [0.76]	±10	3/16 [4.8]	0	less than 0.150 in. [3.81 mm] nominal
6	8 to 12 [203 to 305], excl	±0.040 [1.01]	±10	3/16 [4.8]	0	less than 0.200 in. [5.08 mm] nominal
7	12 to 14 [305 to 356], excl	±0.050 [1.26]	±10	3/16 [4.8]	0	less than 0.220 in. [5.59 mm] nominal

ASTM A270/A270M Standard Cold Machining Size Deviation Permitted

Size, Outside Diameter, in. [mm]	Permissible Variations in Outside Diameter, in. [mm]		Permissible Variations in Cut Length, in. [mm] A
Size, Outside Diameter, in. [mm]	Over	Under	Over	Under
1.000 [25] and under	0.005 [0.13]	0.005 [0.13]	1/8 [3]	0
Over 1 [25] to 2 [50]	0.008 [0.20]	0.008 [0.20]	1/8 [3]	0
Over 2 [50] to 3 [75]	0.010 [0.25]	0.010 [0.25]	1/8 [3]	0
Over 3 [75] to 4 [100]	0.015 [0.38]	0.015 [0.38]	1/8 [3]	0
Over 4 [100] to 5 1/2 [140], excl	0.015 [0.38]	0.015 [0.38]	3/16 [5]	0
5 1/2 [140] to 8 [200], excl	0.030 [0.75]	0.030 [0.75]	3/16 [5]	0
8 [200] to 12 [300]	0.050 [1.25]	0.050 [1.25]	3/16 [5]	0

❓ Frequently Asked Questions (FAQ)

Q1: What is the main difference between ASTM A269 TP316L and standard TP316?

ASTM A269 TP316L is a low-carbon variant of TP316, featuring a carbon content of ≤0.035%. This low carbon level eliminates the risk of intergranular corrosion (IGC) in welded areas by preventing chromium carbide precipitation, making it superior for welded structures without the need for post-weld heat treatment.

Q2: What is the role of Molybdenum (Mo) in ASTM A269 TP316L?

The material contains 2.0% to 3.0% Molybdenum, which significantly enhances its resistance to localized corrosion, such as pitting and crevice corrosion, in aggressive chloride environments like seawater, brine, or chemical processing environments.

Q3: In which industries is ASTM A269 TP316L widely applied?

It is widely used in sanitary and hygienic systems, food and beverage processing, semiconductor and electronics manufacturing, food and dairy plants, pharmaceutical plants, maritime and offshore applications, and medical or laboratory equipment.

Q4: What inspections are performed on these stainless steel tubes?

The tubes undergo rigorous quality control including 100% PMI (Positive Material Identification) testing, and are supplied with EN10204.3.1B Mill Test Certificates. Third-party inspections are also accepted.

Q5: What are the available delivery conditions for TP316L tubes?

They can be delivered in various conditions including Cold Drawn, Annealed and Pickled, Polished, Bright Annealed, Sand Blasting, or Shot Blasting, depending on the customer's specific requirements.

Q6: Can custom sizes and specifications be ordered?

Yes, while standard sizes range from 1/8" NB to 32" NB and wall thicknesses cover SCH 10S to SCH XXS, custom sizes, lengths, and specific requirements can be fully customized on request.