What sizes are available for SS 316H seamless pipes?

Stancor manufactures SS 316H seamless pipes in 1/4" NPS to 10" NPS (6.35mm to 273.1mm OD) with wall thickness from SCH 5S to SCH 160, XXS. Custom sizes available on request.

What is the chemical composition of SS 316H?

SS 316H (UNS S31609) has a composition of C: 0.04-0.10, Mn: 2.00 max, Si: 0.75 max, Cr: 16.0-18.0. It is a austenitic stainless steel grade.

What are the equivalent grades of SS 316H?

The equivalent grades of SS 316H (UNS S31609) are: ASTM: TP316H, JIS: SUS 316HTB, BS: 316S51, GOST: 08Kh17N13M2T.

What is the corrosion resistance of SS 316H?

SS 316H has a PREN of ~24. Seawater resistance: Moderate - better than 304. Max service temperature: 870 C (continuous).

What certifications does Stancor hold for SS 316H seamless pipes?

Stancor manufactures SS 316H seamless pipes with full material test certificates (EN 10204 3.1/3.2), third-party inspection (TPI), and compliance with ASTM A312 / ASME SA312, ASTM A213 / ASME SA213, ASTM A269.

What grade is recommended for high-temperature corrosive service in seamless tube applications?

SS 316H is recommended for high-temperature corrosive service, especially in the 425-816C range where higher carbon content supports elevated-temperature strength. Common standards are ASTM A213 / ASME SA213 for boiler tubes and ASTM A269 for tube applications in corrosive service; Stancor Tubular Products Pvt. Ltd. can supply it.

Which stainless steel pipe grade is used for marine boiler service at elevated temperature?

SS 316H is a suitable stainless steel pipe grade for marine boiler service at elevated temperature in corrosive environments. ASTM A312 / ASME SA312 covers pipe, while ASTM A213 / ASME SA213 covers boiler tubes for this service condition; Stancor Tubular Products Pvt. Ltd. can supply it.

What standard applies to SS 316H boiler tubes for offshore boiler duty in corrosive environments?

For SS 316H boiler tubes used in offshore boiler duty in corrosive environments, ASTM A213 / ASME SA213 is the primary standard. This grade is used for high-temperature service in the 425-816C range, and ASTM A269 may also apply for tube requirements depending on the service condition; Stancor Tubular Products Pvt. Ltd. can supply it.

Is SS 316H seamless pipe suitable for hot corrosive duty at 425-816C?

Yes, SS 316H seamless pipe is suitable for hot corrosive duty at 425-816C where both corrosion resistance and elevated-temperature performance are required. ASTM A312 / ASME SA312 is the relevant pipe standard for this service condition, and the grade is also used in marine and offshore boiler environments; Stancor Tubular Products Pvt. Ltd. can supply it.

Which tube grade is preferred for high heat corrosion service in boiler tubes?

SS 316H is preferred for boiler tubes in high heat corrosion service when the operating condition falls in the 425-816C high-temperature range. ASTM A213 / ASME SA213 is the standard typically specified for boiler tubes, with ASTM A269 also used for certain tube requirements in corrosive environments; Stancor Tubular Products Pvt. Ltd. can supply it.

What pipe grade and standard should be specified for elevated temperature corrosion service in offshore environments?

SS 316H should be specified for elevated temperature corrosion service in offshore environments where high-temperature exposure and corrosive conditions occur together. ASTM A312 / ASME SA312 is used for pipe, while ASTM A213 / ASME SA213 applies to boiler tubes in this service condition; Stancor Tubular Products Pvt. Ltd. can supply it.

Which standard is used for power plant superheater SS 316H tubes in chloride exposure service?

For power plant superheater SS 316H tubes in chloride exposure service, ASTM A213 / ASME SA213 is the usual standard for seamless boiler, superheater, and heat-exchanger tubes. Where the requirement is specified as pipe or instrumentation/general tubing, ASTM A312 / ASME SA312 and ASTM A269 are also relevant; Stancor Tubular Products Pvt. Ltd. can supply it.

Austenitic Stainless SteelUNS S31609W.Nr 1.4919

Also known as: SS 316H, 316H SS, Stainless Steel 316H Seamless Pipes & Tubes, S31609, UNS S31609, 1.4919, Werkstoff 1.4919, W.Nr 1.4919, X6CrNiMoTi17-12-2, 316h, aisi 316h

Stainless Steel 316H Seamless Pipes & Tubes

Name: SS 316H Seamless Pipes & Tubes
Brand: Stancor Tubular Products Pvt. Ltd.

SS 316H (UNS S31609) is the high-carbon version of 316, with carbon controlled to 0.04-0.10%. It combines the molybdenum-enhanced corrosion resistance of 316 with superior creep strength at elevated temperatures (425-816C). This makes it the preferred choice for high-temperature service in corrosive environments where both properties are essential.

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Size Range

1/4" NPS to 10" NPS (6.35mm to 273.1mm OD)

Wall Thickness

SCH 5S to SCH 160, XXS

Standards

4 specs

Chemical Composition (% by weight)

C0.04-0.10

Mn2.00 max

Si0.75 max

Cr16.0-18.0

Ni10.0-14.0

Mo2.0-3.0

P0.045 max

S0.030 max

C	Mn	Si	Cr	Ni	Mo	P	S
0.04-0.10	2.00 max	0.75 max	16.0-18.0	10.0-14.0	2.0-3.0	0.045 max	0.030 max

Mechanical Properties (Minimum at Room Temperature)

Tensile Strength515 MPa min

Yield Strength205 MPa min

Elongation35% min

Hardness95 HRB max

Tensile Strength	Yield Strength	Elongation	Hardness
515 MPa min	205 MPa min	35% min	95 HRB max

Physical Properties - SS 316H

Density7.98 g/cm3

Melting Range1375-1400 C

Thermal Conductivity16.3 W/m-K

Electrical Resistivity740 nOhm-m

Specific Heat500 J/kg-K

Coeff. of Thermal Expansion15.9 um/m-C

Density	Melting Range	Thermal Conductivity	Electrical Resistivity	Specific Heat	Coeff. of Thermal Expansion
7.98 g/cm3	1375-1400 C	16.3 W/m-K	740 nOhm-m	500 J/kg-K	15.9 um/m-C

Corrosion Resistance - SS 316H

Property	Value
Pitting Resistance (PREN)	~24
Max Service Temp (Oxidizing)	870 C (continuous)
Intergranular Corrosion	Susceptible if sensitized (higher carbon)
Stress Corrosion Cracking	Better than 304H in chlorides
General Corrosion Rate	<0.05 mm/yr in most acids
Seawater Resistance	Moderate - better than 304

Equivalent International Grades

ASTMTP316H

JISSUS 316HTB

BS316S51

GOST08Kh17N13M2T

ASTM	JIS	BS	GOST
TP316H	SUS 316HTB	316S51	08Kh17N13M2T

SS 316H vs Comparable Grades

Grade	UNS	Tensile	Yield	PREN	Max Temp
SS 316 / 316LAustenitic Stainless Steel	S31600 / S31603	515 / 485 MPa min	205 / 170 MPa min	~24	870 C
SS 304HAustenitic Stainless Steel	S30409	515 MPa min	205 MPa min	~18	870 C (continuous)
SS 317LAustenitic Stainless Steel	S31703	515 MPa min	205 MPa min	~29	870 C

SS 316H vs SS 316 / 316L: 316H has higher carbon for superior creep strength at elevated temps; 316 for general service.

SS 316H vs SS 304H: 316H adds molybdenum for better chloride resistance; 304H is more economical.

SS 316H vs SS 317L: 317L has higher Mo (3-4%); 316H is specifically for high-temperature applications.

Applicable Standards

ASTM A312 / ASME SA312ASTM A213 / ASME SA213ASTM A269DIN EN 10216-5

Applications

High-temperature service (425-816C) in corrosive environments

Power plant superheater tubes with chloride exposure

Petrochemical furnace tubes with acid contact

Refinery heater tubes requiring Mo for corrosion

Chemical plant heat exchangers at elevated temps

Boiler tubes in marine/offshore environments

Key Advantages of SS 316H

✓Superior creep strength at 425-816C with Mo-enhanced corrosion resistance

✓Higher carbon provides better high-temperature rupture properties

✓Better chloride resistance than 304H due to molybdenum content

✓ASME approved for high-temperature pressure vessel service

✓Excellent for boiler and superheater applications in corrosive environments

✓Combines best of high-temp strength and pitting resistance

SS 316H Applications by Region

🇬🇧

Middle East (UAE, Saudi Arabia, Qatar, Oman, Kuwait)

Used in refinery furnace tubes and offshore high-temperature equipment across UAE, Saudi Arabia, and Qatar where chloride corrosion is also a concern.

🇪🇺

Europe (Germany, UK, Norway, Netherlands, Italy)

Specified for power plant and petrochemical high-temperature applications in Germany, UK, and Scandinavia.

🇺🇸

United States

Used in power generation and petrochemical industries where both high-temp strength and corrosion resistance are needed.

Frequently Asked Questions about SS 316H Seamless Pipes & Tubes

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Quick Specifications

GradeSS 316H

UNSS31609

Werkstoff Nr.1.4919

EN NameX6CrNiMoTi17-12-2

CategoryAustenitic Stainless Steel

Size Range

1/4" NPS to 10" NPS (6.35mm to 273.1mm OD)

Wall Thickness

SCH 5S to SCH 160, XXS

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Industries Served

Power GenerationPetrochemicalChemical ProcessingMarineRefineriesBoiler & Pressure Vessels

Related Grades

SS 304 / 304L

UNS S30400 / S30403

→

SS 304H

UNS S30409

→

SS 316 / 316L

UNS S31600 / S31603

→

SS 321

UNS S32100

→

SS 347

UNS S34700

→

SS 310S

UNS S31008

→

Compare With

SS 316 / 316L

Austenitic Stainless Steel

→

SS 304H

Austenitic Stainless Steel

→

SS 317L

Austenitic Stainless Steel

→

Part of

Stainless Steel Seamless Pipes (Austenitic) →

Ready to Order SS 316H Seamless Pipes & Tubes?

Stancor Tubular Products supplies SS 316H seamless pipes & tubes across the GCC, India, Europe and the USA. Contact our sales team for competitive pricing, fast delivery, and full material certification.

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