ASTM A312 TP310H Seamless Pipe Supplier in India | SS 310H High Temperature Stainless Steel Pipe Exporter Mumbai

Product Overview – ASTM A312 SS TP310H Seamless Pipes

ASTM A312 TP310H is the high carbon version of SS 310 designed for improved high temperature strength. The increased carbon content enhances creep resistance and makes it suitable for boiler tubes, superheaters, and pressure piping systems operating at elevated temperatures.

Seamless construction ensures high pressure handling capability and uniform strength.

SS 310H seamless pipes contain high chromium and nickel content, providing excellent resistance to oxidation and scaling in extreme heat environments.

Standard, Grade & International Equivalents- ASTM A312 SS TP310H Seamless Pipe

Standard ASTM A312 / ASME SA312

Grade TP310

UNS S31000

EN 1.4845

ASTM A312 TP310H Seamless Pipe Specifications

Manufacturing Type :	Seamless
Size Range :	1/8″ NB to 24″ NB
Schedules :	5S, 10S, 40S, 80S, 160, XS, XXS
Length :	6m, 12m, Custom Length
End Type :	Plain End (PE), Beveled End (BE)
Testing :	Hydrostatic Test, PMI, NDT,High Temperature Testing
Certification :	EN 10204 3.1 / 3.2 MTC
Dimensional compliance:	ASME B36.19M.

All specifications are in accordance of ASTM A312 / ASME SA312 standards. Mechanical and chemical values are as per standard limits. Mill Test Certificates (MTC) available upon request.

Chemical Composition of ASTM A312 TP310H

(As per ASTM specification)

Element	Max (%)
Carbon (C)	0.04 – 0.10%
Manganese (Mn)	2.00 %
Phosphorus (P)	0.045 %
Sulfur (S)	0.030 %
Silicon (Si)	1.50 %
Chromium (Cr)	24.0 - 26.0 %
Nickel (Ni)	19.0 - 22.0 %
Iron (Fe)	Balance

Note: Higher carbon content differentiates 310H from 310 and 310S.

Mechanical Properties of TP310H Seamless Pipes

Property	Minimum Value
Tensile Strength	≥ 515 MPa
Yield Strength	≥ 205 MPa
Elongation	≥ 35%

310H is specifically valued for enhanced creep strength at elevated temperatures.

High Temperature & Creep Resistance Performance

SS 310H seamless pipes are designed for long-term exposure to high temperatures under load.
Key characteristics:

🔸 Improved creep resistance compared to 310 and 310S

🔸 Oxidation resistance up to approximately 1100°C (intermittent service)

🔸 Better performance in boiler and superheater environments

🔸 Suitable for pressure vessels operating at elevated temperatures

This makes TP310H ideal for critical power plant and refinery systems.

Applications of ASTM A312 TP310H Seamless Pipes

🔸Boilers and superheaters
🔸Pressure vessels
🔸Heat exchangers
🔸Petrochemical plants
🔸Oil & gas refineries
🔸High temperature structural piping

Understanding Stainless Steel Grades ?

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Advantages of SS 310H Seamless Stainless Steel Pipes

High carbon for enhanced creep strength Excellent oxidation and scaling resistance Suitable for high pressure & high temperature service Strong mechanical stability at elevated temperatures Reliable performance in continuous thermal exposure

Frequently Asked Questions

– ASTM A312 TP310H Seamless Pipes

What is ASTM A312 TP310H?

TP310H is a high carbon austenitic stainless steel seamless pipe grade designed for high temperature and high pressure service applications.

What is the difference between 310, 310S and 310H?

310H contains higher carbon content (0.04–0.10%) compared to 310S (max 0.08%), improving creep strength for elevated temperature service.

Is TP310H better than TP310S for high pressure?

For elevated temperature pressure service, TP310H is generally preferred because of its higher carbon content and improved creep resistance.

What temperature can SS 310H withstand?

SS 310H provides oxidation resistance up to approximately 1100°C in intermittent service conditions.

Is SS 310H suitable for boiler applications?

Yes. Due to improved creep strength and high temperature stability, it is commonly used in boilers and superheater systems.

ASTM A312 SS TP310H Seamless Stainless Steel Pipes Supplier & Exporter in India