Stainless Steel 08Cr17Ti Stress-relieved
Heat-treated state
GB 08Cr17Ti
Applied to thick welded assemblies to restore toughness and relieve residual stress without grain coarsening.
Values for the Stress-relieved condition
Other 08Cr17Ti tempers and conditions
08Cr17Ti is listed in 5 conditions; see the grade overview at 08Cr17Ti.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Stress-relievedThis page Stress relieved after welding/forming (700–780 °C) | Applied to thick welded assemblies to restore toughness and relieve residual stress without grain coarsening. | 290 | 470 | 29 | 158 HB | 2.9 % IACS |
AnnealedDefault Annealed (softened, 780–850 °C, air cooled) | Standard stocked condition for sheet, coil and plate: maximum ductility for deep drawing and forming. | 300 | 480 | 30 | 160 HB | — |
Cold drawn | Standard bar and wire condition for machined fittings, fasteners and welded wire assemblies. | 430 | 560 | 18 | 11 HRC | 2.9 % IACS |
Quarter hard | Use when moderate extra stiffness/strength is needed and only light bending is required. | 450 | 560 | 14 | 12 HRC | 2.9 % IACS |
Half hard | For flat springs, clips and stiff panels where forming is limited to gentle radii. | 560 | 640 | 9 | 22 HRC | 2.9 % IACS |
What is 08Cr17Ti Stress-relieved?
08Cr17Ti Stress-relieved is 08Cr17Ti heat treated to Stress-relieved — applied to thick welded assemblies to restore toughness and relieve residual stress without grain coarsening. 08Cr17Ti Stress-relieved has a yield strength of 290 MPa (42.1 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 72% of stainless steel grades. Elongation at break is 29% and the elastic modulus is 200 GPa (29 Msi). 08Cr17Ti Stress-relieved has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,425°C (2,597 °F). Annealed is the default condition FabDigit quotes; Stress-relieved is available on request or by drawing note.
Advantages
- Low embodied carbon — 3 kg CO₂/kg, better than 97% of stainless steel grades
- Easy to machine — 50/100, better than 90% of stainless steel grades
- Forms and bends easily — 76/100, better than 88% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
- Conducts heat well — 24.5 W/m·K (14.2 BTU/hr·ft·°F), better than 85% of stainless steel grades
Limitations
- Needs corrosion protection — 46/100, worse than 82% of stainless steel grades
- Hard to polish — 60/100, worse than 80% of stainless steel grades
08Cr17Ti Stress-relieved properties
Typical room-temperature values for 08Cr17Ti Stress-relieved; 22 are specific to this condition. Other listed values are 08Cr17Ti reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
08Cr17Ti Stress-relieved has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,425°C (2,597 °F).
Mechanical14
08Cr17Ti Stress-relieved has a yield strength of 290 MPa (42.1 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 72% of stainless steel grades. Elongation at break is 29% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
08Cr17Ti Stress-relieved is rated for continuous service to 815°C (1,499 °F). It conducts heat at 24.5 W/m·K (14.2 BTU/hr·ft·°F), better than 85% of stainless steel grades. Thermal expansion is 10.4 µm/m·K (5.78 µin/in·°F).
Electrical3
08Cr17Ti Stress-relieved conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (46/100), worse than 82% of stainless steel grades.
Sustainability4
Producing a kilogram of 08Cr17Ti Stress-relieved takes about 42 MJ of energy and emits 3 kg of CO₂ — less than 95% of stainless steel grades. Typical recycled content is 65%.
Manufacturability7
08Cr17Ti Stress-relieved's machinability is fair (50/100, better than 90% of stainless steel grades); weldability very good (80/100); formability very good (76/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 08Cr17Ti Stress-relieved
Is 08Cr17Ti easy to machine?
Machines like 430 but gummier: sharp tools, rigid setup, positive rake, 20–25% lower speed than carbon steel, generous coolant to avoid built-up edge.
Can 08Cr17Ti be welded?
Excellent weldability for a ferritic — Ti stabilization avoids sensitization; use low heat input, 409/430Ti or austenitic 309L filler, no preheat for thin gauge, avoid grain coarsening above ~950 °C.
Can 08Cr17Ti be formed, bent or molded?
Good deep drawing and roll forming with r-value near 1.4; watch for ridging/roping on drawn panels and use larger bend radii than for 304.
What surface finishes work on 08Cr17Ti?
Not anodizable; passivate per ASTM A967, or apply BA/No.4 mechanical finishes, electropolishing or PVD color coatings; keep free of carbon-steel contamination to prevent rust staining.
08Cr17Ti 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 |
|---|---|---|
| CGOST 5632 max | ≤ 0.08 | 0.05 |
| Si | ≤ 0.8 | 0.5 |
| Mn | ≤ 0.8 | 0.5 |
| Cr | 16 – 18 | 17 |
| Tistabilizer, ≥5×C in most mill practice | 0.2 – 0.8 | 0.45 |
| Niresidual | ≤ 0.6 | 0.3 |
| S | ≤ 0.03 | 0.01 |
| P | ≤ 0.04 | 0.03 |
| Fe | balance | — |
08Cr17Ti Stress-relieved — frequently asked
What is 08Cr17Ti Stress-relieved used for?
08Cr17Ti Stress-relieved is typically used for automotive trim and exhaust, household appliances, architectural panels and food processing equipment. In short: ti-stabilized 439 equivalent; low-nickel 304 substitute; best-welding ferritic sheet.
What is the yield strength of 08Cr17Ti Stress-relieved?
08Cr17Ti Stress-relieved has a typical yield strength of 290 MPa (42.1 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 72% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is 08Cr17Ti Stress-relieved easy to machine?
Reasonably — machinability is rated fair (50/100, better than 90% of stainless steel grades). Machines like 430 but gummier: sharp tools, rigid setup, positive rake, 20–25% lower speed than carbon steel, generous coolant to avoid built-up edge.
Can 08Cr17Ti Stress-relieved be welded?
Yes — weldability is rated very good (80/100). Excellent weldability for a ferritic — Ti stabilization avoids sensitization; use low heat input, 409/430Ti or austenitic 309L filler, no preheat for thin gauge, avoid grain coarsening above ~950 °C.
What surface finishes work on 08Cr17Ti Stress-relieved?
Not anodizable; passivate per ASTM A967, or apply BA/No.4 mechanical finishes, electropolishing or PVD color coatings; keep free of carbon-steel contamination to prevent rust staining.
Can 08Cr17Ti Stress-relieved be formed, bent or molded?
Good deep drawing and roll forming with r-value near 1.4; watch for ridging/roping on drawn panels and use larger bend radii than for 304.
What is the maximum service temperature of 08Cr17Ti Stress-relieved?
08Cr17Ti Stress-relieved is rated for continuous use to about 815°C (1,499 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 08Cr17Ti Annealed and 08Cr17Ti-CD?
Annealed is the default condition — standard stocked condition for sheet, coil and plate: maximum ductility for deep drawing and forming. CD: standard bar and wire condition for machined fittings, fasteners and welded wire assemblies. Yield strength is 300 MPa in Annealed versus 430 MPa in CD.
Sources
- GOST 5632 — Corrosion-resistant, heat-resistant and creep-resisting steels and alloys — Gosstandart / Rosstandart (2014)
- ASTM A240/A240M (UNS S43035, Type 439) — ASTM International (2022)
- EN 10088-1 / 10088-2 (X3CrTi17, 1.4510) — CEN (2014)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- Type 439 / 1.4510 ferritic stainless steel datasheets — Outokumpu / AK Steel (Cleveland-Cliffs) (2021)
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.