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Published: November 9, 2025 | Updated: November 9, 2025By Gangsteel Engineering Team – 25+ Years in Stainless Steel Export Excellence
In the specialized domain of stainless steels compliant with ASTM A240/A240M and ASME SA240/SA240M standards, 316Ti emerges as a titanium-stabilized austenitic grade whose rod and bar dimensions under ASTM SA479 are optimized for high-temperature and corrosive service in industries requiring precision and durability.
As a premier producer and exporter based in China, Gangsteel has supplied thousands of tons of 316Ti stainless steel, meeting ASTM A240/A240M specs for plates and sheets alongside SA479 for rods and bars, to sectors like petrochemical, pharmaceutical, and marine.
If you're sourcing rod or bar stock under SA479 where dimensions like diameter, length, and tolerance are critical, understanding 316Ti's specifications is essential. This article explores its SA479 rod and bar dimensions, properties, and practical insights, based on ASTM SA479, A240/A240M, and ASME SA240/SA240M standards and our mill data.
From our production lines, we've seen 316Ti rod and bar dimensions in action: In a 2024 U.S. valve manufacturing project, our SA479 316Ti bars under ASTM A240 /A240M (complementary specs) provided tight tolerances for M20-M100 sizes, enabling high-strength fastening without distortion, as per client feedback. Compliant with ASME SA240/SA240M for related apps, 316Ti's density of 8.00 g/cm³ supports efficient dimensions. Let's delve into the specifications, from composition to stock options, to guide your sourcing.
316Ti stainless steel under ASTM SA479 offers rod and bar dimensions from 4-500mm diameter, lengths up to 6m, and tolerances like ±0.2mm for cold-finished, with tensile 515 MPa min and yield 205 MPa min. Titanium stabilization ensures IGC resistance, ideal for high-temp apps. Density 8.00 g/cm³, PREN 23-28. Equivalent to EN 1.4571; Gangsteel stocks with certs for custom sizes.
The chemical composition of 316Ti, as specified in ASTM SA479 (aligned with A240/A240M and ASME SA240/SA240M), is optimized for rod and bar properties, with titanium ensuring stability.
|
Element |
% Range or Max |
Role in Rod & Bar Specs |
|---|---|---|
|
Carbon (C) |
0.08 max |
Low with Ti for weldable rods. |
|
Manganese (Mn) |
2.00 max |
Aids hot working for bar lengths. |
|
Silicon (Si) |
0.75 max |
Improves bar surface finish. |
|
Phosphorus (P) |
0.045 max |
Limited for bar toughness. |
|
Sulfur (S) |
0.030 max |
Controlled for bar machinability. |
|
Chromium (Cr) |
16.00-18.00 |
Enhances bar corrosion resistance. |
|
Molybdenum (Mo) |
2.00-3.00 |
Boosts bar pitting resistance. |
|
Nickel (Ni) |
10.00-14.00 |
Stabilizes for bar ductility. |
|
Titanium (Ti) |
5x(C+N) min, 0.70 max |
Stabilizes bar microstructure. |
|
Nitrogen (N) |
0.10 max |
Strengthens bar matrix. |
|
Iron (Fe) |
Balance |
Base for bar properties. |
This composition under ASTM SA479 ensures bar stock meets mechanical specs.
Gangsteel's 316Ti meets SA479 for certified use.
316Ti's mechanical properties, per ASTM SA479 (aligned with A240/A240M and ASME SA240/SA240M), highlight its suitability for rod and bar stock.
|
Property |
Minimum Value |
Typical Range |
SA479 Notes |
|---|---|---|---|
|
Tensile Strength (MPa) |
515 |
550-700 |
For all bar diameters. |
|
Yield Strength (MPa) |
205 |
220-300 |
Consistent in cold-finished bars. |
|
Elongation (%) |
40 |
45-55 |
High for bar bending. |
|
Reduction of Area (%) |
Not specified |
50-60 |
Indicates bar toughness. |
|
Hardness (HRB max) |
95 |
80-90 |
Annealed bars. |
|
Brinell (HB max) |
217 |
160-190 |
Converted for bar specs. |
|
Impact (Charpy J) |
Not req. |
100+ at RT |
Optional for low-temp bars. |
SA479 specs cold/hot-finished bars; Gangsteel's meet for high-strength.
For uns stainless steel plates, specs align.
Physical properties of 316Ti, compliant with ASTM SA479 (aligned with A240/A240M and ASME SA240/SA240M), aid design.
|
Property |
Value |
Notes on Rod & Bar Specs |
|---|---|---|
|
Density (g/cm³) |
8.00 |
For bar weight calcs. |
|
Melting Range (°C) |
1370-1400 |
High for bar forging. |
|
Thermal Conductivity (W/m·K) |
14.6 (at 100°C) |
Good for bar heat apps. |
|
Specific Heat (J/kg·K) |
500 |
Efficient for bar cycling. |
|
Thermal Expansion (10^-6 /°C) |
16.5 (20-100°C) |
Low distortion in bar lengths. |
|
Modulus (GPa) |
193 |
Stiffness for bar loads. |
|
Electrical Resistivity (μΩ·cm) |
74 |
Moderate for bar uses. |
These ensure SA479 bar stock performs reliably.
316Ti's corrosion resistance, per ASTM SA479 (aligned with A240/A240M and ASME SA240/SA240M), is enhanced by Ti for bar apps in corrosives.
SA479 requires optional tests like A262 for IGC in bars.
316Ti bars are highly weldable per ASTM SA479, with Ti preventing sensitization. Fillers ER316L.
Gangsteel's 316Ti SA240 Type 316Ti bars (SA479 compliant) fab easily.
316Ti bar specs suit chemical shafts (corrosion), marine rods (pitting), per SA479.
In Gangsteel's supply to U.S. offshore, SA479 316Ti bars endured without failure.
Equivalents: EN 1.4571 (similar bar specs). For A240 GR 316Ti, SA479 aligns.
Gangsteel stocks 316Ti bars (4-500mm dia.) at $3,200-3,800/ton FOB. SA479 certs; contact for specs.
Q: What are the A276 specifications for 316Ti stainless steel bar stock?
A: ASTM A276 specifies 316Ti bars in diameters 4-500mm, lengths up to 6m, finishes like polished, with tensile 515 MPa min and yield 205 MPa min.
Q: What is the chemical composition per A276 for 316Ti bars?
A: Per A276, C 0.08 max, Cr 16-18%, Mo 2-3%, Ni 10-14%, Ti 0.70 max, Mn 2 max, Si 0.75 max, P 0.045 max, S 0.03 max, Fe balance.
Q: What mechanical properties are required in A276 for 316Ti bars?
A: A276 requires tensile 515 MPa min, yield 205 MPa min, elongation 40% min for 316Ti bars.
Q: What sizes are available in A276 316Ti bar stock?
A: A276 316Ti bars available in diameters 4-500mm, hex 18-57mm, square 18-47mm, flat 3-12mm thickness.
Q: What is the density of 316Ti per A276 specs?
A: Density is 8.00 g/cm³ per A276-related data, consistent for bar calcs.
Q: What is the hardness of 316Ti bars in A276?
A: Maximum hardness 95 HRB per A276 annealed condition for 316Ti bars.
Q: What is the yield strength of 316Ti bar stock?
A: Minimum yield strength 205 MPa per A276 for 316Ti bars.
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