Stainless Steel 316Ti-1/2 Hard
Supply condition
GB 316Ti · UNS S31635 · ASTM A240 TP316Ti · EN 1.4571, X6CrNiMoTi17-12-2 · JIS SUS316Ti
1/2 Hard = half hard
Higher-strength strip for clamps, springs and flat stampings with only mild bending.
Values for the 1/2 Hard condition
Other 316Ti tempers and conditions
316Ti is listed in 6 conditions; see the grade overview at 316Ti.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot Rolled (+AT plate, hot-rolled bar as-rolled/annealed) | Heavy plate and large-section bar as hot rolled then annealed and pickled; lowest-cost form for weldments and vessels. | 250 | 570 | 42 | 165 HB | 2.3 % IACS |
mill-annealed / softened condition (general stock designation) | Generic softened stock designation used by distributors; mechanically equivalent to the solution-annealed condition. | 255 | 575 | 45 | 155 HB | 2.3 % IACS |
Solution AnnealedDefault 1020–1120 °C, rapid cooled (EN 1.4571 +AT / ASTM A240 annealed) | Standard stocked condition for plate, sheet, tube and bar — maximum corrosion resistance and ductility, non-magnetic. | 260 | 580 | 45 | 160 HB | — |
Quarter hard | Light cold reduction for springy sheet parts and gaskets where some forming is still required. | 515 | 760 | 20 | 18 HRC | 2.3 % IACS |
cold-drawn/peeled bar and wire (EN +C700 class) | Pick for bar and shafting needing higher yield, tighter tolerance and better chip control than annealed bar. | 520 | 760 | 22 | 20 HRC | 2.3 % IACS |
1/2 HardThis page Half hard | Higher-strength strip for clamps, springs and flat stampings with only mild bending. | 690 | 930 | 12 | 25 HRC | 2.3 % IACS |
What is 316Ti-1/2 Hard?
316Ti-1/2 Hard is 316Ti supplied in the 1/2 Hard condition — higher-strength strip for clamps, springs and flat stampings with only mild bending. 316Ti-1/2 Hard has a yield strength of 690 MPa (100 ksi) and a tensile strength of 930 MPa (135 ksi) — stronger than 92% of stainless steel grades. Elongation at break is 12% and the elastic modulus is 200 GPa (29 Msi). 316Ti-1/2 Hard has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,375°C (2,507 °F). Solution Annealed is the default condition FabDigit quotes; 1/2 Hard is available on request or by drawing note.
Advantages
- High strength — 690 MPa (100 ksi), better than 92% of stainless steel grades
- Easy to machine — 45/100, better than 84% of stainless steel grades
Limitations
- Limited ductility — 12%, worse than 95% of stainless steel grades
- Hard to polish — 55/100, worse than 89% of stainless steel grades
316Ti-1/2 Hard properties
Typical room-temperature values for 316Ti-1/2 Hard; 24 are specific to this condition. Other listed values are 316Ti reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
316Ti-1/2 Hard has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,375°C (2,507 °F).
Mechanical16
316Ti-1/2 Hard has a yield strength of 690 MPa (100 ksi) and a tensile strength of 930 MPa (135 ksi) — stronger than 92% of stainless steel grades. Elongation at break is 12% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
316Ti-1/2 Hard is rated for continuous service to 425°C (797 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 59% of stainless steel grades. Thermal expansion is 16.5 µm/m·K (9.17 µin/in·°F).
Electrical3
316Ti-1/2 Hard conducts electricity at 2.3 % IACS, better than 55% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (68/100), better than 63% of stainless steel grades.
Sustainability4
Producing a kilogram of 316Ti-1/2 Hard takes about 58 MJ of energy and emits 5.2 kg of CO₂ — more than 66% of stainless steel grades. Typical recycled content is 65%.
Manufacturability7
316Ti-1/2 Hard's machinability is fair (45/100, better than 84% of stainless steel grades); weldability very good (72/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 316Ti-1/2 Hard
Is 316Ti easy to machine?
Gummy and work-hardening with abrasive TiC particles — use rigid setups, positive-rake coated carbide, 25–60 m/min, heavy constant feed and flood coolant; avoid dwelling.
Can 316Ti be welded?
Excellent by GTAW/GMAW/SMAW without pre- or post-weld heat treatment; use 318 (ER318 / 1.4576, Nb-stabilized) or 316L filler, low heat input, back-purge tube welds.
Can 316Ti be formed, bent or molded?
Cold forms and deep draws well but with higher springback and force than carbon steel; anneal 1020–1120 °C + rapid cool after severe forming, hot work 1150–900 °C.
What surface finishes work on 316Ti?
Pickle and passivate (ASTM A967) or electropolish after welding; mirror polishing is limited by titanium inclusion streaks, so choose 316L for decorative bright finishes.
316Ti chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| CEN 1.4571 max 0.08 | ≤ 0.08 | 0.05 |
| SiASTM S31635 max 0.75 | ≤ 1 | 0.5 |
| Mn | ≤ 2 | 1.3 |
| P | ≤ 0.05 | 0.03 |
| SEN max 0.015 | ≤ 0.03 | 0.01 |
| CrASTM 16.0–18.0; EN 16.5–18.5 | 16 – 18.5 | 17 |
| Ni | 10.5 – 14 | 12 |
| MoASTM 2.0–3.0 | 2 – 2.5 | 2.2 |
| Ti≥5×(C+N); EN 1.4571 max 0.70 | 0.3 – 0.7 | 0.45 |
| N | ≤ 0.1 | 0.03 |
| Fe | balance | — |
316Ti-1/2 Hard — frequently asked
What is 316Ti-1/2 Hard used for?
316Ti-1/2 Hard is typically used for chemical pipework, reactor vessels, heat exchanger shells and tubes, expansion joints and bellows, flue-gas and exhaust ducting and pressure vessel flanges and fittings. In short: titanium-stabilized 316 stainless.
What is the yield strength of 316Ti-1/2 Hard?
316Ti-1/2 Hard has a typical yield strength of 690 MPa (100 ksi) and a tensile strength of 930 MPa (135 ksi) — stronger than 92% of stainless steel grades. Strength varies by condition: see the 6 listed tempers.
Is 316Ti-1/2 Hard easy to machine?
Reasonably — machinability is rated fair (45/100, better than 84% of stainless steel grades). Gummy and work-hardening with abrasive TiC particles — use rigid setups, positive-rake coated carbide, 25–60 m/min, heavy constant feed and flood coolant; avoid dwelling.
Can 316Ti-1/2 Hard be welded?
Yes — weldability is rated very good (72/100). Excellent by GTAW/GMAW/SMAW without pre- or post-weld heat treatment; use 318 (ER318 / 1.4576, Nb-stabilized) or 316L filler, low heat input, back-purge tube welds.
What surface finishes work on 316Ti-1/2 Hard?
Pickle and passivate (ASTM A967) or electropolish after welding; mirror polishing is limited by titanium inclusion streaks, so choose 316L for decorative bright finishes.
Can 316Ti-1/2 Hard be formed, bent or molded?
Cold forms and deep draws well but with higher springback and force than carbon steel; anneal 1020–1120 °C + rapid cool after severe forming, hot work 1150–900 °C.
What is the maximum service temperature of 316Ti-1/2 Hard?
316Ti-1/2 Hard is rated for continuous use to about 425°C (797 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in 316Ti-1/2 Hard?
Yes — 316Ti-1/2 Hard is available for CNC machining and sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- EN 10088-1/-2/-3 Stainless steels (X6CrNiMoTi17-12-2, 1.4571) — CEN (2014)
- ASTM A240/A276/A312 (UNS S31635) — ASTM International (2022)
- GB/T 1220 / GB/T 24511 (0Cr18Ni12Mo2Ti ) — SAC (2017)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Stainless steel 1.4571 / 316Ti datasheet — Outokumpu / Sandvik (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.