Stainless Steel 15Cr25Ti Annealed
Temper · default condition
GB 15Cr25Ti
Standard stocked condition for plate, bar and tube; best ductility and IGC resistance before service.
Values for the Annealed condition
Other 15Cr25Ti tempers and conditions
15Cr25Ti is listed in 5 conditions; see the grade overview at 15Cr25Ti.
- SR
- Annealed
- CR-Annealed
- HR
- CD
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Stress relieved | Post-weld treatment to restore HAZ ductility and avoid 475 °C / sigma-phase embrittlement in fabricated vessels. | 295 | 510 | 20 | 175 HB | 2.6 % IACS |
AnnealedDefaultThis page 760–830 °C, rapid air/water cool | Standard stocked condition for plate, bar and tube; best ductility and IGC resistance before service. | 300 | 520 | 22 | 180 HB | — |
Cold Rolled + Annealed and Pickled (2B/2D sheet & strip) | Thin sheet and strip for furnace liners, muffles and burner shrouds where surface finish and formability matter. | 320 | 530 | 23 | 185 HB | 2.6 % IACS |
Hot rolled | As-hot-rolled heavy plate and bar where the part will be annealed or put straight into high-temperature service. | 360 | 560 | 18 | 14 HRC | 2.6 % IACS |
Cold drawn | Higher strength and better size tolerance for machined fittings, bolting and furnace hardware in small diameters. | 500 | 640 | 12 | 225 HB | — |
What is 15Cr25Ti Annealed?
15Cr25Ti Annealed is 15Cr25Ti in the Annealed temper — standard stocked condition for plate, bar and tube; best ductility and IGC resistance before service. 15Cr25Ti Annealed has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 68% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 200 GPa (29 Msi). 15Cr25Ti Annealed has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 98% of stainless steel grades. It melts at 1,425°C (2,597 °F).
Advantages
- High service temperature — 1,050°C (1,922 °F), better than 91% of stainless steel grades
- Easy to machine — 45/100, better than 84% of stainless steel grades
- High electrical conductivity — 2.6 % IACS, better than 77% of stainless steel grades
- Conducts heat well — 21 W/m·K (12.1 BTU/hr·ft·°F), better than 76% of stainless steel grades
Limitations
- Low fracture toughness — 45 MPa·√m (41 ksi·√in), worse than 95% of stainless steel grades
- Hard to polish — 55/100, worse than 89% of stainless steel grades
- Difficult to weld — 40/100, worse than 83% of stainless steel grades
- Limited ductility — 22%, worse than 75% of stainless steel grades
15Cr25Ti Annealed properties
Typical room-temperature values for 15Cr25Ti Annealed; 11 are specific to this condition. Other listed values are 15Cr25Ti reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
15Cr25Ti Annealed has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 98% of stainless steel grades. It melts at 1,425°C (2,597 °F).
Mechanical15
15Cr25Ti Annealed has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 68% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
15Cr25Ti Annealed is rated for continuous service to 1,050°C (1,922 °F). It conducts heat at 21 W/m·K (12.1 BTU/hr·ft·°F), better than 76% of stainless steel grades. Thermal expansion is 10.4 µm/m·K (5.78 µin/in·°F).
Electrical3
15Cr25Ti Annealed conducts electricity at 2.6 % IACS, better than 77% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 52% of stainless steel grades.
Sustainability4
Producing a kilogram of 15Cr25Ti Annealed takes about 52 MJ of energy and emits 4.6 kg of CO₂ — less than 76% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
15Cr25Ti Annealed's machinability is fair (45/100, better than 84% of stainless steel grades); weldability fair (40/100); formability fair (45/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 15Cr25Ti Annealed
Is 15Cr25Ti easy to machine?
Machine like 446: rigid setup, sharp positive-rake carbide, ~60–90 m/min, heavy feed and flood coolant to cut through the work-hardening skin and abrasive Ti carbonitrides.
Can 15Cr25Ti be welded?
GTAW/GMAW with matching Ti-stabilized or austenitic 309/310 filler, low heat input, interpass below ~150 °C, no preheat above ~200 °C, and avoid slow cooling through 400–550 °C and 550–800 °C to prevent 475 °C and sigma embrittlement.
Can 15Cr25Ti be formed, bent or molded?
Cold form only thin gauges with generous bend radii (≥2t) and grain direction control; heavy sections should be warm formed at 200–400 °C because of the high ductile–brittle transition temperature.
What surface finishes work on 15Cr25Ti?
Pickle and passivate after hot work or welding to restore the Cr-rich film; mechanical polishing is possible but coarse ferrite grain limits mirror quality — do not anodize.
15Cr25Ti 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 grade 15Х25Т | ≤ 0.15 | 0.1 |
| Si | ≤ 1 | 0.6 |
| Mn | ≤ 0.8 | 0.5 |
| Cr | 24 – 27 | 25.5 |
| Ti5×C min, stabilizer against IGC | 0.3 – 0.9 | 0.55 |
| Ni | ≤ 0.6 | 0.3 |
| Cu | ≤ 0.3 | — |
| S | ≤ 0.03 | — |
| P | ≤ 0.04 | — |
| Fe | balance | — |
15Cr25Ti Annealed — frequently asked
What is 15Cr25Ti Annealed used for?
15Cr25Ti Annealed is typically used for furnace muffles and fixtures, heat-treatment baskets, industrial oven components and high-temperature exhaust parts. In short: highest-temperature ferritic grade; 1050 °C scaling resistance; low toughness and formability.
What is the yield strength of 15Cr25Ti Annealed?
15Cr25Ti Annealed has a typical yield strength of 300 MPa (43.5 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 68% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is 15Cr25Ti Annealed easy to machine?
Reasonably — machinability is rated fair (45/100, better than 84% of stainless steel grades). Machine like 446: rigid setup, sharp positive-rake carbide, ~60–90 m/min, heavy feed and flood coolant to cut through the work-hardening skin and abrasive Ti carbonitrides.
Can 15Cr25Ti Annealed be welded?
With care — weldability is rated fair (40/100). GTAW/GMAW with matching Ti-stabilized or austenitic 309/310 filler, low heat input, interpass below ~150 °C, no preheat above ~200 °C, and avoid slow cooling through 400–550 °C and 550–800 °C to prevent 475 °C and sigma embrittlement.
What surface finishes work on 15Cr25Ti Annealed?
Pickle and passivate after hot work or welding to restore the Cr-rich film; mechanical polishing is possible but coarse ferrite grain limits mirror quality — do not anodize.
Can 15Cr25Ti Annealed be formed, bent or molded?
Cold form only thin gauges with generous bend radii (≥2t) and grain direction control; heavy sections should be warm formed at 200–400 °C because of the high ductile–brittle transition temperature.
What is the maximum service temperature of 15Cr25Ti Annealed?
15Cr25Ti Annealed is rated for continuous use to about 1,050°C (1,922 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 15Cr25Ti Annealed and 15Cr25Ti-CD?
Annealed is the default condition — standard stocked condition for plate, bar and tube; best ductility and IGC resistance before service. CD: higher strength and better size tolerance for machined fittings, bolting and furnace hardware in small diameters. Yield strength is 300 MPa in Annealed versus 500 MPa in CD.
Sources
- GOST 5632 — Corrosion-resistant, heat-resisting and creep-resisting steels and alloys (grade 15Х25Т) — Rosstandart (2014)
- GOST 7350 / GOST 5949 — thick plate and bar of corrosion- and heat-resisting steel — Rosstandart (1977)
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip (UNS S44600) — ASTM International (2023)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys (ferritic stainless 446) — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
- Marochnik Stalei i Splavov — 15Х25Т data sheet — Mashinostroenie (2003)
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.