Stainless Steel S35140 CR-1/4H
Supply condition
UNS S35140
CR-1/4H = cold Rolled 1/4 Hard
Light cold work for slightly higher yield strength in formed strip parts and lightly stressed clamps.
Values for the CR-1/4H condition
Other S35140 tempers and conditions
S35140 is listed in 5 conditions; see the grade overview at S35140.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault solution/mill annealed sheet, strip and plate | Standard stocked condition: maximum ductility for bellows/flex-hose forming, tube bending and welded fabrication. | 275 | 620 | 45 | 170 HB | — |
As-welded deposit | Property basis for welded bellows and tubing joints; no post-weld heat treatment normally required. | 300 | 590 | 30 | 185 HB | 1.7 % IACS |
CR-1/4HThis page Cold Rolled 1/4 Hard | Light cold work for slightly higher yield strength in formed strip parts and lightly stressed clamps. | 520 | 760 | 25 | 17 HRC | 1.7 % IACS |
Cold drawn | Cold drawn bar/tube for close tolerances and higher machined-part strength; anneal before severe bending. | 550 | 760 | 22 | 22 HRC | 1.7 % IACS |
Cold Rolled 1/2 Hard | Use where springback and higher yield strength are wanted in thin strip; forming severity must be reduced. | 690 | 900 | 12 | 27 HRC | 1.7 % IACS |
What is S35140 CR-1/4H?
S35140 CR-1/4H is S35140 supplied in the CR-1/4H condition — light cold work for slightly higher yield strength in formed strip parts and lightly stressed clamps. S35140 CR-1/4H has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 79% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 196 GPa (28.4 Msi). S35140 CR-1/4H has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,350°C (2,462 °F). Annealed is the default condition FabDigit quotes; CR-1/4H is available on request or by drawing note.
Advantages
- Good corrosion resistance — 76/100, better than 80% of stainless steel grades
- High strength — 520 MPa (75.4 ksi), better than 79% of stainless steel grades
Limitations
- Poor heat conductor — 11.5 W/m·K (6.64 BTU/hr·ft·°F), worse than 97% of stainless steel grades
- Low electrical conductivity — 1.7 % IACS, worse than 93% of stainless steel grades
- High embodied carbon — 6.2 kg CO₂/kg, worse than 90% of stainless steel grades
S35140 CR-1/4H properties
Typical room-temperature values for S35140 CR-1/4H; 23 are specific to this condition. Other listed values are S35140 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
S35140 CR-1/4H has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,350°C (2,462 °F).
Mechanical13
S35140 CR-1/4H has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 79% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 196 GPa (28.4 Msi).
Thermal5
S35140 CR-1/4H is rated for continuous service to 425°C (797 °F). It conducts heat at 11.5 W/m·K (6.64 BTU/hr·ft·°F), worse than 97% of stainless steel grades. Thermal expansion is 14.5 µm/m·K (8.06 µin/in·°F).
Electrical3
S35140 CR-1/4H conducts electricity at 1.7 % IACS, worse than 93% of stainless steel grades.
Chemical & Environmental2
Corrosion resistance is very good (76/100), better than 80% of stainless steel grades.
Sustainability4
Producing a kilogram of S35140 CR-1/4H takes about 75 MJ of energy and emits 6.2 kg of CO₂ — more than 84% of stainless steel grades. Typical recycled content is 40%.
Manufacturability7
S35140 CR-1/4H's machinability is poor (33/100, worse than 57% of stainless steel grades); weldability good (68/100); formability good (55/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S35140 CR-1/4H
Is S35140 easy to machine?
Treat as a high-nickel austenitic: rigid setups, positive-rake sharp carbide, low speed / heavy positive feed, flood coolant and no dwelling to avoid rapid work hardening.
Can S35140 be welded?
Readily welded by GTAW/GMAW/plasma with Ni-Cr-Mo filler (ERNiCrMo-3 type) or matching wire; keep interpass temperature low, no preheat and normally no post-weld heat treatment.
Can S35140 be formed, bent or molded?
Good cold formability for bellows, convoluted hose and deep-drawn parts, but the work-hardening rate is high — allow extra press tonnage and interstage anneal at ~1050–1120 °C with rapid cooling.
What surface finishes work on S35140?
Pickle/passivate or electropolish after hot work; the alloy takes a bright polished or brushed finish. Anodizing is not applicable.
S35140 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 |
|---|---|---|
| Clow carbon, Ti-stabilized | ≤ 0.05 | 0.02 |
| Cr | 20 – 22 | 21 |
| Ni | 33 – 36 | 34.5 |
| Mo | 3.5 – 4.5 | 4 |
| Tistabilizer | 0.15 – 0.6 | 0.35 |
| Mn | ≤ 1 | 0.5 |
| Si | ≤ 1 | 0.4 |
| P | ≤ 0.03 | — |
| S | ≤ 0.02 | — |
| Febalance ≈ 37–40% | balance | — |
S35140 CR-1/4H — frequently asked
What is S35140 CR-1/4H used for?
S35140 CR-1/4H is typically used for high-temperature furnace components, process heater internals and specialty thermal equipment. In short: 1000 °C oxidation resistance; bellows-capable high-nickel grade; limited stock availability.
What is the yield strength of S35140 CR-1/4H?
S35140 CR-1/4H has a typical yield strength of 520 MPa (75.4 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 79% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is S35140 CR-1/4H easy to machine?
Not especially — machinability is rated poor (33/100, worse than 57% of stainless steel grades). Treat as a high-nickel austenitic: rigid setups, positive-rake sharp carbide, low speed / heavy positive feed, flood coolant and no dwelling to avoid rapid work hardening.
Can S35140 CR-1/4H be welded?
Yes — weldability is rated good (68/100). Readily welded by GTAW/GMAW/plasma with Ni-Cr-Mo filler (ERNiCrMo-3 type) or matching wire; keep interpass temperature low, no preheat and normally no post-weld heat treatment.
What surface finishes work on S35140 CR-1/4H?
Pickle/passivate or electropolish after hot work; the alloy takes a bright polished or brushed finish. Anodizing is not applicable.
Can S35140 CR-1/4H be formed, bent or molded?
Good cold formability for bellows, convoluted hose and deep-drawn parts, but the work-hardening rate is high — allow extra press tonnage and interstage anneal at ~1050–1120 °C with rapid cooling.
What is the maximum service temperature of S35140 CR-1/4H?
S35140 CR-1/4H 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.
What is the difference between S35140 Annealed and S35140-CD?
Annealed is the default condition — standard stocked condition: maximum ductility for bellows/flex-hose forming, tube bending and welded fabrication. CD: cold drawn bar/tube for close tolerances and higher machined-part strength; anneal before severe bending. Yield strength is 275 MPa in Annealed versus 550 MPa in CD.
Sources
- ASTM A240/A480 — chromium-nickel stainless plate, sheet and strip (general requirements) — ASTM International (2023)
- SAE J1086 / ASTM DS-56 — Metals & Alloys in the Unified Numbering System (UNS) — SAE / ASTM (2017)
- Fe-35Ni-21Cr-4Mo Ti-stabilized heat- and corrosion-resistant alloy (Alloy 864 class) data sheet — specialty alloy producer (2020)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Specialty Handbook — Heat-Resistant Materials — ASM International (1997)
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.