ASTM A213 TP304H Stainless Steel Seamless Pipe

What is ASTM A213 TP304H?

ASTM A213 TP304H is the high-carbon variant of TP304, optimized for high-temperature creep strength, used in high-temp boiler, superheater and heat exchanger tubing.

Equivalent Grades (Horizontal)UNS: S30409 | JIS: SUS304H | GB: 07Cr19Ni10 | EN: X6CrNi18-10 | W.Nr.: 1.4307

Chemical Composition (wt%, Horizontal)C: 0.04-0.10 | Si: ≤1.00 | Mn: ≤2.00 | P: ≤0.045 | S: ≤0.030 | Cr: 18.00-20.00 | Ni: 8.00-10.50 | N: ≤0.10 | Fe: Balance

Key Properties (20°C, Annealed, Horizontal)Density: 7.93g/cm³ | Melting Point: 1400-1450°C | Tensile Strength: ≥515N/mm² | Yield Strength: ≥205N/mm² | Elongation: ≥40% | Hardness: ≤201HB

Core Characteristics

Superior high-temperature creep strength (600-870°C)

Good high-temperature oxidation resistance

Mandatory post-weld annealing

For high-temp, high-stress boiler and heat exchanger tubing

TP304 vs TP304H (Horizontal)Carbon: 304 (≤0.08%) | 304H (0.04-0.10%) | Creep: 304 (Good) | 304H (Excellent) | Annealing: 304 (Optional) | 304H (Mandatory)

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
304	min.	-	-	-	-	-	18.0	-	8.0	-
	max.	0.08	2.0	0.75	0.045	0.030	20.0		10.5	0.10
304L	min.	-	-	-	-	-	18.0	-	8.0	-
	max.	0.030	2.0	0.75	0.045	0.030	20.0		12.0	0.10
304H	min.	0.04	-	-	-0.045	-	18.0	-	8.0	-
	max.	0.10	2.0	0.75		0.030	20.0		10.5

 

304 Stainless Steel Suppliers

If you have project requirements for 304 stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.