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316Ti Stainless Steel SA240 316Ti Equivalent A240 vs 316Ti Comparison

Published: November 9, 2025 | Updated: November 9, 2025By Gangsteel Engineering Team – 25+ Years in Stainless Steel Export Excellence

In the global stainless steel market compliant with ASTM A240/A240M and ASME SA240/SA240M standards, SA240 316Ti and A240 316Ti represent the same titanium-stabilized austenitic grade, with SA240 being the ASME code adoption of ASTM A240 for pressure vessel applications.

As a premier producer and exporter based in China, Gangsteel has supplied thousands of tons of SA240 316Ti and A240 316Ti stainless steel, meeting ASTM A240/A240M specs for plates and sheets, to industries like petrochemical, pharmaceutical, and marine.

If you're comparing SA240 316Ti equivalent to A240 316Ti under ASME SA240/SA240M where standards alignment is key, understanding their equivalence is essential. This article explores the comparison, property alignments, and practical insights, based on ASTM A240/A240M and ASME SA240/SA240M standards and our mill data.

From our production lines, we've facilitated standard swaps: In a 2024 U.S. pressure vessel project, our SA240 316Ti plates under ASTM A240 /A240M were used interchangeably with A240 specs, achieving identical IGC resistance without re-certification, as per client audits. Compliant with ASME SA240/SA240M for pressure apps, SA240 316Ti's density of 8.00 g/cm³ supports equivalent designs. Let's delve into the comparison, from composition to applications, to confirm SA240 316Ti's equivalence to A240 316Ti.

 

Summary

SA240 316Ti stainless steel is the ASME equivalent of ASTM A240 316Ti, with identical chemical composition (C 0.08 max, Ti 0.70 max), mechanical properties (tensile 515 MPa min, yield 205 MPa min, elongation 40% min), and tolerances, allowing direct substitution. Both share PREN 23-28 and density 8.00 g/cm³, compliant with ASTM A240/A240M (general) and ASME SA240/SA240M (pressure code). No significant differences; SA240 is mandatory for BPVC. Ideal for chemical reactors; Gangsteel offers dual-cert stock for seamless use.

 

Chemical Composition: Identical for Equivalence

The chemical composition of SA240 316Ti, as specified in ASME SA240/SA240M (adopting ASTM A240/A240M), is identical to A240 316Ti, ensuring full equivalence.

Element

% Range or Max

Role in Equivalence

Carbon (C)

0.08 max

Identical low C for both specs.

Manganese (Mn)

2.00 max

No difference; deoxidizer.

Silicon (Si)

0.75 max

Identical for oxidation.

Phosphorus (P)

0.045 max

Same impurity limit.

Sulfur (S)

0.030 max

Identical control.

Chromium (Cr)

16.00-18.00

Overlap for passivation.

Molybdenum (Mo)

2.00-3.00

Identical for pitting.

Nickel (Ni)

10.00-14.00

Balanced for austenite.

Titanium (Ti)

5x(C+N) min, 0.70 max

Ti for stabilization; same in both.

Nitrogen (N)

0.10 max

Identical.

Iron (Fe)

Balance

Base matrix.

Equivalence holds as SA240 adopts A240 composition.

Gangsteel's SA240 316Ti meets both for certified equivalence.

 

Mechanical Properties: Equivalent Across Specs

Both SA240 and A240 have identical mechanical requirements for 316Ti.

Property

Minimum Value

Typical Range

Equivalence Notes

Tensile Strength (MPa)

515

550-700

Identical min in both specs.

Yield Strength (MPa)

205

220-300

No difference.

Elongation (%)

40

45-55

Equivalent ductility.

Hardness (HRB max)

95

80-90

Same max.

Impact (Charpy J)

Not req.

100+ at RT

Optional in both.

Equivalence ensures same performance.

For uns stainless steel plates, equivalence holds.

 

Physical Properties: Identical for Equivalents

Both specs share physical properties, with no differences.

Property

Value

Notes

Density (g/cm³)

8.00

Identical.

Thermal Conductivity (W/m·K at 100°C)

14.6

No difference.

Specific Heat (J/kg·K)

500

Identical.

Thermal Expansion (10^-6 /°C, 20-100°C)

16.5

Low for both.

This equivalence supports direct design swaps.

 

Corrosion Resistance: Equivalent Protection

Both specs have PREN 23-28 for similar corrosion, with Ti preventing IGC.

  • Pitting: CPT ~25°C.
  • IGC: Resistant with Ti.
  • SCC: Equivalent in chlorides.
  • Uniform: <0.1 mm/year in acids.

Weldability and Fabrication: Equivalent Ease

Both specs weld well; Ti eliminates annealing. Machinability ~60% for both.

Gangsteel's SA240 316Ti SA240 Type 316Ti matches A240 fab.

Applications: Shared for Equivalents

Both used in chemical reactors, marine fittings, power boilers—equivalence allows swaps.

In Gangsteel's supply to U.S. pharma, SA240 316Ti matched A240 without issue.

Sourcing: Practical Advice

Gangsteel offers SA240/A240 316Ti at $3,200-3,800/ton FOB, 1-200mm thick. Dual certs save on testing; contact for quotes.

For A240 GR 316Ti, equivalence confirmed.

 

FAQ: SA240 316Ti Equivalent Materials Questions Answered

Q: What are the equivalent materials for SA240 316Ti stainless steel?

A: Key equivalents include EN/DIN 1.4571 (X6CrNiMoTi17-12-2), JIS SUS316Ti, BS 320S31, AFNOR Z6CNDT17-12, SS 2350, and GOST 08Ch17N13M2T—all with Ti stabilization.

Q: Is SA240 316Ti equivalent to EN 1.4571?

A: Yes, SA240 316Ti is directly equivalent to EN 1.4571, with identical Ti for IGC resistance and similar properties.

Q: What is the difference between SA240 316Ti and its equivalents?

A: Minor range variances (e.g., Ni in EN 1.4571 10.5-13.5% vs. 10-14%); fully equivalent for most apps.

Q: Can I use JIS SUS316Ti as an equivalent for SA240 316Ti?

A: Yes, JIS SUS316Ti is equivalent to SA240 316Ti, with matching chemistry and mechanicals for substitution.

Q: What standards cover SA240 316Ti equivalents?

A: Equivalents like EN 1.4571 under EN 10088-3; SA240 316Ti under ASTM A240—dual-cert for harmony.

Q: What is the density of SA240 316Ti and its equivalents?

A: Density 8.00 g/cm³ for SA240 316Ti and equivalents like 1.4571—identical for calcs.

Q: Where can I source SA240 316Ti or its equivalents?

A: Gangsteel stocks SA240 316Ti and equivalents at $3,200-3,800/ton FOB, 1-200mm thick. Dual certs available.

Q: Is SA240 316Ti equivalent to 316L or 321?

A: No—better than 316L in high-temp IGC, similar to 321 but with Mo for pitting; equivalents are Ti-stabilized like 1.4571.

 

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