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Published: November 8, 2025 | Updated: November 8, 2025By Gangsteel Engineering Team – 25+ Years in Stainless Steel Export Excellence
316Ti stainless steel, designated as UNS S31635 under ASTM standards, EN 1.4571 in European specs, JIS SUS316Ti in Japanese norms, and AISI 316Ti in American nomenclature, is a titanium-stabilized austenitic grade that excels in high-temperature and corrosive environments.
As a premier producer and exporter based in China, Gangsteel has supplied thousands of tons of ASME SA240 316Ti and ASTM A240 316Ti plates, sheets, and bars to global industries including petrochemical, pharmaceutical, and marine.
If you're assessing this material for structural integrity in a reactor or piping system, understanding its hardness and yield strength—alongside other properties—is crucial. This detailed data guide covers these metrics, with comparisons and practical insights, based on industry standards and our mill tests.
From our facilities, we've observed 316Ti's robust performance: In a 2024 U.S. pharmaceutical installation, our ASME SA240 Type 316Ti components maintained yield strength under cyclic loading at 150°C, with hardness ensuring wear resistance, as verified by client fatigue reports. Often specified under ASTM A240 /A240M for general use or ASME SA240/SA240M for pressure vessels, 316Ti's properties make it a durable choice. Let's delve into the hardness and yield strength data, integrated with composition and applications.
316Ti stainless steel (UNS S31635, EN 1.4571, JIS SUS316Ti, AISI 316Ti) has a maximum hardness of 95 HRB (217 HB) in annealed condition, providing softness for machining while offering high yield strength of 205 MPa min (typical 220-300 MPa). This combination ensures excellent durability against deformation in corrosive high-temp apps, with titanium stabilization preventing sensitization. Compared to 316L, 316Ti retains yield better at elevated temps (>500°C). Density is 8.00 g/cm³, supporting weight-efficient designs. Under standards like ASME SA240 316Ti and ASTM A240 316Ti, it's ideal for chemical reactors and marine piping. Gangsteel stocks 1-200mm thick plates with full certs for global use.
316Ti's composition, with titanium for stabilization, supports its mechanical profile by preventing carbide formation that could harden or weaken the material at high temps.
Standard composition (per ASTM A240, % by weight):
|
Element |
% Range or Max |
Role in Hardness & Yield |
|---|---|---|
|
Carbon (C) |
0.08 max |
Low C keeps hardness low and yield stable; Ti binds excess. |
|
Manganese (Mn) |
2.00 max |
Aids yield without increasing hardness. |
|
Silicon (Si) |
0.75 max |
Minor role; improves yield at high temps. |
|
Phosphorus (P) |
0.045 max |
Controlled to maintain ductility and yield. |
|
Sulfur (S) |
0.030 max |
Low to avoid embrittlement affecting hardness. |
|
Chromium (Cr) |
16.00-18.00 |
Enhances overall strength and hardness resistance. |
|
Molybdenum (Mo) |
2.00-3.00 |
Boosts yield in corrosives without hardening. |
|
Nickel (Ni) |
10.00-14.00 |
Stabilizes austenite for consistent yield. |
|
Titanium (Ti) |
5x(C+N) min, 0.70 max |
Stabilizes for high-temp yield retention. |
|
Nitrogen (N) |
0.10 max |
Increases yield as interstitial element. |
|
Iron (Fe) |
Balance |
Base for balanced hardness/yield. |
This setup ensures hardness remains <95 HRB while yield holds at high temps. Gangsteel's melts optimize Ti for max stability.
316Ti's mechanical properties are robust, with hardness and yield optimized for durability in corrosive heat.
Key data (annealed condition, per ASTM A240):
|
Property |
Minimum Value |
Typical Range |
Notes on Hardness & Yield |
|---|---|---|---|
|
Yield Strength (0.2% Offset, MPa) |
205 |
220-300 |
High yield for deformation resistance; retains >70% at 815°C due to Ti. |
|
Hardness (HRB max) |
95 |
80-90 |
Low hardness for easy machining; no significant increase with work. |
|
Brinell Hardness (HB max) |
217 |
160-190 |
Converted; suitable for wear without brittleness. |
|
Tensile Strength (MPa) |
515 |
550-700 |
Supports yield in tension. |
|
Elongation (%) |
40 |
45-55 |
Complements low hardness for formability. |
|
Reduction of Area (%) |
Not specified |
50-60 |
Indicates yield under stress. |
|
Charpy Impact (J at RT) |
Not required |
100+ |
Maintains with low hardness. |
Hardness stays soft (95 HRB max) for fabrication, while yield (205 MPa min) ensures strength in service. At 600°C, yield drops <10%, better than non-stabilized grades. Compared to 316L, 316Ti's yield is similar but more stable in heat.
Gangsteel's SA240 Type 316Ti stock shows yield up to 300 MPa.
Physical traits support 316Ti's mechanical performance.
|
Property |
Value |
Notes on Relation to Hardness & Yield |
|---|---|---|
|
Density (g/cm³) |
8.00 |
Consistent for yield calcs in dense structures. |
|
Melting Range (°C) |
1370-1400 |
High to maintain yield at heat. |
|
Thermal Conductivity (W/m·K at 100°C) |
14.6 |
Aids heat dissipation without softening hardness. |
|
Specific Heat (J/kg·K) |
500 |
Efficient for thermal loads on yield. |
|
Thermal Expansion (10^-6 /°C, 20-100°C) |
16.5 |
Low to preserve yield in expansion. |
|
Modulus of Elasticity (GPa) |
193 |
High for yield under stress. |
Density 8.00 g/cm³ enables precise mass (80 kg/m² for 10mm), integrating with low hardness for easy handling.
For UNS stainless steel plates, 316Ti offers balanced mechanics.
316Ti's corrosion resistance complements its mechanicals, with Ti preventing IGC that could reduce yield at boundaries. PREN 23-28 resists pitting, ensuring durability without hardness increase from corrosion products.
316Ti welds easily, with Ti eliminating annealing needs, maintaining yield post-weld. Low hardness aids machining.
Gangsteel's A240 GR 316Ti fabricates without yield loss.
316Ti's properties suit chemical reactors (high yield in corrosives), food equipment (low hardness for clean), marine piping (durable yield).
In Gangsteel's supply to U.S. pharma, 316Ti withstood loads without yield drop.
Equivalents: UNS S31635, EN 1.4571, JIS SUS316Ti—matching hardness/yield.
Gangsteel stocks 316Ti at $3,200-3,800/ton FOB. 1-200mm thick, ASME SA240 certs. Contact for data.
Q: What is the hardness of 316Ti stainless steel?
A: The maximum hardness of 316Ti (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) is 95 HRB or 217 HB in annealed condition, providing softness for machining while ensuring durability.
Q: What is the yield strength of 316Ti stainless steel?
A: The minimum yield strength of 316Ti (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) is 205 MPa (0.2% offset), with typical 220-300 MPa, retaining well at high temps due to Ti stabilization.
Q: How does heat treatment affect hardness and yield strength in 316Ti?
A: 316Ti is typically annealed (no hardening needed), maintaining low hardness (95 HRB max) and yield (205 MPa min); Ti stabilization prevents property loss at heat, unlike non-stabilized grades.
Q: What is the Brinell hardness of 316Ti stainless steel?
A: The maximum Brinell hardness of 316Ti (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) is 217 HB, converted from 95 HRB, suitable for wear-resistant yet machinable apps.
Q: What factors influence the yield strength of 316Ti?
A: Yield strength in 316Ti (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) is influenced by composition (N for boost) and condition; annealed 205 MPa min, with cold work increasing to 300 MPa.
Q: How does 316Ti's hardness compare to 316L?
A: Both 316Ti and 316L (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti vs. 316L) have max hardness 95 HRB, but 316Ti's Ti allows hardness retention in heat without sensitization.
Q: What is the typical range for yield strength in 316Ti?
A: Typical yield strength for 316Ti (ASME SA240 316Ti, ASTM A240 316Ti, EN 1.4571, JIS SUS316Ti, AISI 316Ti) is 220-300 MPa, exceeding min 205 MPa in annealed state for enhanced durability.
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