ASTM A213 TP316H Stainless Steel Seamless Pipe

What is ASTM A213 TP316H?

ASTM A213 TP316H is the high-carbon molybdenum-containing austenitic stainless steel seamless pipe derived from TP316, which is optimized for high-temperature creep strength. It is mainly used in high-temperature, high-pressure and high-stress boiler superheaters and heat exchanger tubes.

Equivalent Grades (Horizontal)

UNS: S31609 | JIS: SUS316H | GB: 07Cr17Ni12Mo2 | EN: X6CrNiMo17-12-2 | W.Nr.: 1.4407

Chemical Composition (wt%, Horizontal)

C: 0.04-0.10 | Si: ≤1.00 | Mn: ≤2.00 | P: ≤0.045 | S: ≤0.030 | Cr: 16.00-18.00 | Ni: 10.00-14.00 | Mo: 2.00-3.00 | Fe: Balance

Key Properties (20°C, Annealed, Horizontal)

Density: 7.98g/cm³ | Melting Point: 1375-1450°C | Tensile Strength: ≥515N/mm² | Yield Strength: ≥205N/mm² | Elongation: ≥40% | Hardness: ≤217HB

Core Characteristics

• Superior high-temperature creep strength, can maintain structural integrity for a long time under 600-870°C high-temperature stress • Excellent high-temperature oxidation and chloride corrosion resistance, suitable for high-temperature corrosive pipeline services • Post-weld annealing is mandatory to ensure the consistency of high-temperature performance and avoid performance attenuation • Higher carbon content enhances high-temperature stability, which is better than TP316 in high-temperature stress scenarios

TP316 vs TP316H (Horizontal)

Carbon Content: 316 (≤0.08%) | 316H (0.04-0.10%) | High-Temp Creep Strength: 316 (Ordinary) | 316H (Excellent) | Post-weld Annealing: 316 (Optional) | 316H (Mandatory) | High-Temp Adaptability: 316 (General) | 316H (Strong)

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
316	Min	-	-	-	0	-	16.0	2.00	10.0	-
	Max	0.08	2.0	0.75	0.045	0.03	18.0	3.00	14.0	0.10
316L	Min	-	-	-	-	-	16.0	2.00	10.0	-
	Max	0.03	2.0	0.75	0.045	0.03	18.0	3.00	14.0	0.10
316H	Min	0.04	0.04	0	-	-	16.0	2.00	10.0	-
	max	0.10	0.10	0.75	0.045	0.03	18.0	3.00	14.0	-

 

Stainless Steel Suppliers

If you have project requirements for 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.
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