SA 213 TP 304H Tube Equivalent and Specifications

SA 312 TP-304H: Pipe Equivalent to SA 240 Plate

At Gangsteel, a leading manufacturer and exporter of stainless steel products, we supply high-quality SA 312 TP-304H stainless steel pipes and SA 240 GR 304H plates compliant with ASME SA 312 and SA 240 standards. SA 312 TP-304H, also known as AISI 304H, UNS S30409, or 1.4948, is a high-carbon austenitic stainless steel optimized for high-temperature service up to 1500°F (815°C). As the pipe equivalent to SA 240 GR 304H plate, it shares identical composition and properties for seamless integration in pressure vessels and piping systems. This guide details the equivalence, specifications, and applications of SA 312 TP-304H as the pipe counterpart to SA 240 plate. Contact us at admin@gangsteel.com or explore our ASME SA240 Stainless sheet offerings.

Overview of SA 312 TP-304H as Pipe Equivalent to SA 240 Plate

SA 312 TP-304His specified under ASME SA 312 for seamless, welded, and heavily cold-worked austenitic stainless steel pipes for high-temperature and corrosive service. It is the direct pipe equivalent to SA 240 GR 304H plate under ASME SA 240, both featuring 0.04-0.10% carbon for enhanced creep and rupture strength. The "TP" denotes "Type," aligning with AISI 304H. Non-magnetic with a density of 8.00 g/cm³, SA 312 TP-304H pipes are used in conjunction with SA 240 plates for fabricated systems like boilers and heat exchangers. See sa240 gr 304h for plate details.

Chemical Composition

The chemical composition of SA 312 TP-304H (equivalent to SA 240 GR 304H) ensures high-temperature performance:

High carbon (0.04-0.10%) boosts creep resistance. See sa240 gr 304l for low-carbon variants.

Mechanical Properties

High strength at high temperatures (25.5 ksi allowable at 1000°F). See sa240 gr 304.

Physical Properties

• Density: 8.00 g/cm³.
• Melting Point: 1400-1450°C.
• Thermal Conductivity: 16.2 W/m·K.
• Coefficient of Thermal Expansion: 17.2 × 10⁻⁶/K.
• Max Service Temperature: 1500°F (815°C) continuous.

Corrosion Resistance

SA 312 TP-304H (equivalent to SA 240 GR 304H) resists mild acids and atmospheric conditions, outperforming SS204 vs SS 304. Higher carbon risks sensitization in welds; anneal for protection. See sa240 gr 316l for chlorides.

Weldability

Fair with ER308H fillers; low heat input (<2.0 kJ/mm) and annealing required. See sa240 gr 321.

Applications of SA 312 TP-304H Pipe as Equivalent to SA 240 Plate

SA 312 TP-304H pipe, equivalent to SA 240 GR 304H plate, is used in:

• Boilers and pressure vessels (seamless tubing).
• Heat exchangers (high-temperature pipes).
• Power generation piping.
• Chemical processing lines.

For cost-effective options, see sa240 gr 201.

Pricing and Availability

As of October 19, 2025, SA 312 TP-304H pipe prices (Sch 10S, 1-4" OD) range from $1.80-$4.00/kg. Gangsteel offers $1.80/kg FOB (MOQ 1 ton) for sa240 gr 304h. Contact admin@gangsteel.com or visit astm a 240 stainless plate.

FAQ on SA 312 TP-304H Pipe Equivalent to SA 240 Plate

What is the chemical equivalence between SA 312 TP-304H pipe and SA 240 GR 304H plate?

Identical: 0.04-0.10% C, 18-20% Cr, 8-10.5% Ni, ensuring high-temperature compatibility.

How do mechanical properties differ between SA 312 TP-304H pipe and SA 240 GR 304H plate?

They are the same: tensile strength 515 MPa (75 ksi), yield strength 205 MPa (30 ksi), elongation 40%.

What are the physical properties of SA 312 TP-304H pipe equivalent to SA 240 plate?

Density 8.00 g/cm³, melting point 1400-1450°C, max service temperature 1500°F (815°C) continuous.

What applications use SA 312 TP-304H pipe as equivalent to SA 240 GR 304H plate?

High-temperature pressure vessels, boilers, heat exchangers, and chemical piping, leveraging creep resistance.

Why choose Gangsteel for SA 312 TP-304H pipe or SA 240 GR 304H plate?

Competitive pricing ($1.80/kg FOB for pipe, $1.60/kg for plate), 600+ ton stock, custom fabrication, and full certifications.