Astm a240 316h equivalent

Astm a240 316h equivalent

In the stainless steel domain, finding equivalents for ASTM A240 Grade 316H (UNS S31609) is crucial for engineers and buyers dealing with high-temperature, corrosive environments where global sourcing or standard compliance is key. ASTM A240 316H is a high-carbon, molybdenum-bearing austenitic stainless steel for plate, sheet, and strip, optimized for creep resistance in applications like boilers and chemical reactors. Equivalents such as EN 1.4919 (X6CrNiMo17-12-2), DIN 1.4919, JIS SUS316H, and BS 316S51 provide similar high-carbon Mo-alloyed profiles for thermal strength and pitting resistance (PREN 24-26), allowing substitutions without redesign. As a top manufacturer and exporter in China, Gangsteel offers ASTM A240 316H and its equivalents with dual certifications, ensuring performance in petrochemical and power sectors.

This article outlines 316H equivalents, their specs, and usage, aiding in informed choices. For our high-temp grades, visit the ASTM A 240/A 240M stainless steel plate portfolio, including ASTM A 240 Gr 316H and ASTM A 240 Gr 316.

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1. Understanding ASTM A240 Grade 316H: The Baseline for Equivalents

ASTM A240 Grade 316H is a high-carbon (0.04-0.10%) variant of molybdenum-alloyed austenitic stainless steel for high-temperature service, where carbon boosts creep and rupture strength. It's for plate, sheet, strip in pressure vessels with Mo for pitting resistance.

Attributes:

• Chemistry: C 0.04-0.10%, Cr 16.0-18.0%, Ni 10.0-14.0%, Mo 2.0-3.0%.
• Mechanics: Tensile ≥515 MPa, Yield ≥205 MPa, Elongation ≥40%.
• Corrosion: PREN 24-26; good in chlorides/acids.
• Fabricability: Welds with 316H filler; anneal for thick.

Equivalents must match for heat/corrosion. Gangsteel ensures via dual-certs.

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2. Why Equivalents Matter: Benefits and Key Considerations

Equivalents enable:

• Sourcing: DIN 1.4919 in Europe when ASTM scarce.
• Cost: JIS SUS316H cheaper in Asia.
• Compliance: EN 1.4919 for PED; BS for UK.
• Performance: Similar creep/IGC per ISO 15510.

Consider:

• Variations: EN Mo 2.0-2.5% vs 2.0-3.0%—minor PREN impact.
• Testing: G48 pitting, A262 IGC required.
• Limits: Equivalents for high-temp corrosives; not super-austenitic.

Gangsteel’s equivalents save 10-20% in 200+ projects.

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3. Key Criteria for Determining Equivalents

Equivalents align on:

• Chemistry: High C 0.04-0.10%, Mo 2-3%.
• Mechanics: Yield ≥205 MPa, creep >180 MPa at 650°C.
• Corrosion: PREN 24-26, A262 pass.
• Standards: EN 10088, JIS G4305 references.
• Fabricability: Weld/anneal similar.

Gangsteel lab-verifies.

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4. Comprehensive List of ASTM A240 Grade 316H Equivalents

Compiled from reliable sources:

These are functional per ISO 15510; minor Mo in EN (2.0-2.5%) ok for most.

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5. Detailed Comparison: ASTM 316H vs Key Equivalents

ASTM 316H vs EN 1.4919

• Chemistry: Matching high C/Mo; EN Ni 10.0-13.0% narrower.
• Mechanics: Tensile 515-620 MPa align; creep similar.
• Corrosion: Equivalent PREN/G48.
• Use: Interchangeable; EN for CE.

ASTM 316H vs JIS SUS316H

• Chemistry: Identical; JIS Si ≤1.00% minor.
• Mechanics: Yield 205-230 MPa matched.
• Corrosion: Same; JIS for Japanese codes.
• Use: Seamless in Asia.

ASTM 316H vs BS 316S51

• Chemistry: Per EN.
• Mechanics: BS EN 10088 aligns.
• Corrosion: Identical.
• Use: For UK vessels.

Differences minimal; Gangsteel verifies.

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6. Applications Where Equivalents Shine

Equivalents broaden 316H use:

• Petrochemical: JIS SUS316H for Asian reformers.
• Power: EN 1.4919 for EU boilers.
• Chemical: BS 316S51 for UK reactors.
• Heat Treatment: GOST for Russian fixtures.

Gangsteel’s equivalents in 150+ high-temp projects.

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7. How to Source and Verify Equivalents

• Sourcing: Mill like Gangsteel for dual-certs.
• Verification: MTCs with PMI/G48/A262.
• Testing: In-house creep (E139), IGC.
• Customization: High C tuned.

Contact for samples.

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8. Price Comparison of Equivalents

November 2025 (USD/kg FOB):

• ASTM 316H: 5-8
• EN 1.4919: 5.2-8.2
• JIS SUS316H: 4.8-7.8
• BS 316S51: 5-8
• GB variant: 4.5-7.5

High C/Mo/Ni (~$17k/ton) affect; discounts bulk.

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9. FAQ on ASTM A240 Type 316H Equivalents

Q: Is EN 1.4919 a direct equivalent to ASTM 316H?

A: Yes, EN 1.4919 (X6CrNiMo17-12-2) is a close match with similar high carbon (0.04-0.08%) and molybdenum (2.0-2.5%) for equivalent creep resistance and pitting performance; it's fully interchangeable for high-temperature applications in EU projects under PED, with tensile strength ≥515 MPa and PREN 24-26 aligning closely, though verify Mo range for specific chloride exposure.

Q: Can JIS SUS316H replace ASTM 316H?

A: Absolutely, JIS SUS316H offers matching high carbon (0.04-0.10%) and molybdenum (2.0-3.0%) per JIS G4305, providing the same thermal strength for boilers or reactors; it's widely used in Asian manufacturing for seamless substitution, with yield ≥205 MPa and corrosion resistance in acids/chlorides equivalent, but confirm for ASME-coded vessels via dual-certification.

Q: What’s the difference between ASTM 316H equivalents and 304H?

A: ASTM 316H equivalents like EN 1.4919 include 2-3% molybdenum for superior pitting in chlorides (PREN 24-26 vs 18-20 for 304H equivalents), making them better for wet high-temperature environments; however, both share high carbon for creep, with 316H types costing 20-30% more due to Mo, so use 316H equivalents when corrosion is key and 304H for mild oxidizing heat to save costs.

Q: Are there Chinese equivalents to ASTM 316H?

A: Yes, GB 0Cr17Ni12Mo2 with high carbon variants per GB/T 20878 offers similar molybdenum (2.0-3.0%) and carbon (0.04-0.10%) for equivalent creep and corrosion in acids/chlorides; it's cost-effective for Asian markets and fully interchangeable in non-critical applications, but for ASME compliance, dual-certification to ASTM is advised to meet pressure vessel standards.

Q: How to test if an equivalent matches ASTM 316H?

A: Test chemistry via PMI for high carbon (0.04-0.10%) and Mo (2-3%); mechanicals per ASTM E8 for tensile/yield; corrosion via ASTM G48 for pitting (CPT >25°C) and A262 for IGC; creep per E139 at 650°C; third-party labs like SGS can confirm, ensuring the equivalent performs in high-temp corrosive environments without failure.

Q: Is BS 316S51 equivalent to ASTM 316H?

A: Yes, BS 316S51 aligns with EN 1.4919 and offers matching high carbon and molybdenum per BS EN 10088, providing the same creep resistance and pitting for UK-based projects; it's interchangeable for pressure vessels under BS standards, with elongation ≥40% and hardness ≤217 HB mirroring ASTM requirements.

Q: What about AFNOR equivalents for ASTM 316H?

A: AFNOR Z6CND17-12 is a French equivalent with similar composition (Mo 2.0-3.0%, high C) per NF EN 10088-3, delivering equivalent corrosion and thermal performance in acids and chlorides; it's suitable for nuclear or chemical apps in France, fully matching ASTM 316H in mechanics and often used in European multinational projects.

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11. Why Choose Gangsteel for 316H and Equivalents?

Gangsteel’s 25+ years, 500+ experts, and high-C control ensure equivalent quality. 120k tons/year exports, ABS/TUV certified. Custom annealing, global delivery. Explore ASTM A 240 Gr 316.

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12. Conclusion

ASTM A240 316H equivalents like EN 1.4919, JIS SUS316H, and BS 316S51 offer high-carbon Mo-alloyed alternatives for thermal-corrosive duties. For compliance or savings, these grades maintain reliability. Gangsteel bridges with certified materials—contact for quotes on 316H equivalents or ASTM A 240 Gr 304H. Select strategically.