a240 tp 304H Stainless Steel Round Bar

a240 tp 304H Stainless Steel Round Bar: Strength and Applications

At Gangsteel, a leading manufacturer and exporter of stainless steel products, we supply premium a240 tp 304H stainless steel round bar compliant with ASTM A240 and ASME SA 240 standards. a240 tp 304H stainless steel round bar, also known as SA 240 GR 304H or AISI 304H, is a high-carbon austenitic stainless steel optimized for high-temperature strength up to 1500°F (815°C). This versatile material is ideal for applications like boilers, heat exchangers, and high-temperature piping. This guide details the strength properties and applications of a240 tp 304H stainless steel round bar. Contact us at admin@gangsteel.com or explore our ASME SA240 Stainless sheet offerings.

Overview of a240 tp 304H Stainless Steel Round Bar

a240 tp 304H stainless steel round bar is specified for chromium and chromium-nickel stainless steel products used in pressure vessels and high-temperature service. With 0.04-0.10% carbon, it enhances creep and rupture strength compared to standard 304 or 304L round bar. Non-magnetic with a density of 8.00 g/cm³, it’s perfect for demanding environments. For bar-specific standards, use ASTM A479 TP 304H; A240 focuses on plates but aligns for bar fabrication. See sa240 gr 304h.

Chemical Composition

The composition of a240 tp 304H stainless steel round bar ensures high-temperature performance:

Higher carbon improves creep resistance. See sa240 gr 304l for low-carbon variants.

Mechanical Properties and Strength

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

a240 tp 304H stainless steel round bar 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 a240 tp 304H Stainless Steel Round Bar

a240 tp 304H stainless steel round bar is used in:

• Bolts and fasteners for high-temperature piping.
• Valve stems and fittings in heat exchangers.
• Shafts and rods in power generation.
• Structural bars in boilers.

For cost-effective options, see sa240 gr 201.

Pricing and Availability

As of October 19, 2025, a240 tp 304H stainless steel round bar prices (2-100mm diameter) 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 a240 tp 304H Stainless Steel Round Bar

What is the maximum service temperature for a240 tp 304H stainless steel round bar?

Continuous up to 1500°F (815°C), with high creep resistance for high-temperature piping.

What are the mechanical properties of a240 tp 304H stainless steel round bar?

Tensile strength 515 MPa (75 ksi), yield strength 205 MPa (30 ksi), elongation 40%.

How does a240 tp 304H stainless steel round bar compare to 304L?

304H has higher carbon for heat strength; 304L is better for weldability. See sa240 gr 304l.

What applications use a240 tp 304H stainless steel round bar?

Bolts, valve stems, shafts in boilers, heat exchangers, and power generation piping.

Why choose a240 tp 304H stainless steel round bar?

High creep resistance and corrosion in high-temperature environments at competitive pricing.