Stainless Steel 1.4597-SPR (Spring temper wire)
Supply condition
EN 1.4597
Heavily drawn wire for springs, clips and mesh where high tensile strength matters more than corrosion margin.
Values for the SPR condition
Other 1.4597 tempers and conditions
1.4597 is listed in 8 conditions; see the grade overview at 1.4597.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ADefault Solution annealed | Standard stocked condition for sheet, coil, tube and bar — maximum ductility for forming, drawing and welding. | 340 | 720 | 50 | 195 HB | — |
EN 10088-2 cold-worked strength class, Rm ≥ 700 MPa | Lightly cold-worked European strength class when a guaranteed minimum tensile of 700 MPa is specified. | 420 | 760 | 35 | 20 HRC | 2.4 % IACS |
Quarter hard | Choose for light stiffening of panels and tube where some bending is still required. | 570 | 900 | 25 | 25 HRC | 2.4 % IACS |
Cold drawn | Cold-drawn bar and cold-heading wire for fasteners and turned parts; better straightness and surface than annealed bar. | 650 | 900 | 20 | 25 HRC | 2.4 % IACS |
Half hard | Good strength-to-cost condition for brackets, clamps and structural strip with mild forming only. | 800 | 1,080 | 15 | 32 HRC | 2.4 % IACS |
Three-quarter hard | For flat springs and high-stiffness strip where only very gentle bends are made. | 930 | 1,240 | 10 | 37 HRC | 2.4 % IACS |
Full hard | Maximum as-rolled strength for straight strip, blades and clamp bands; essentially no forming capability. | 1,000 | 1,320 | 8 | 41 HRC | 2.4 % IACS |
SPRThis page Spring temper wire | Heavily drawn wire for springs, clips and mesh where high tensile strength matters more than corrosion margin. | 1,350 | 1,600 | 4 | 46 HRC | 2.4 % IACS |
What is 1.4597-SPR?
1.4597-SPR is 1.4597 supplied in the SPR condition — heavily drawn wire for springs, clips and mesh where high tensile strength matters more than corrosion margin. 1.4597-SPR has a yield strength of 1,350 MPa (196 ksi) and a tensile strength of 1,600 MPa (232 ksi) — stronger than 99% of stainless steel grades. Elongation at break is 4% and the elastic modulus is 200 GPa (29 Msi). 1.4597-SPR has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,400°C (2,552 °F). A is the default condition FabDigit quotes; SPR is available on request or by drawing note.
Advantages
- High strength — 1,350 MPa (196 ksi), better than 99% of stainless steel grades
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
Limitations
- Limited ductility — 4%, worse than 100% of stainless steel grades
- Limited formability — 12/100, worse than 93% of stainless steel grades
- Limited service temperature — 300°C (572 °F), worse than 90% of stainless steel grades
- Low fracture toughness — 60 MPa·√m (54.6 ksi·√in), worse than 88% of stainless steel grades
- Difficult to machine — 25/100, worse than 88% of stainless steel grades
1.4597-SPR properties
Typical room-temperature values for 1.4597-SPR; 23 are specific to this condition. Other listed values are 1.4597 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
1.4597-SPR has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical16
1.4597-SPR has a yield strength of 1,350 MPa (196 ksi) and a tensile strength of 1,600 MPa (232 ksi) — stronger than 99% of stainless steel grades. Elongation at break is 4% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1.4597-SPR is rated for continuous service to 300°C (572 °F). It conducts heat at 16 W/m·K (9.24 BTU/hr·ft·°F), better than 58% of stainless steel grades. Thermal expansion is 17 µm/m·K (9.44 µin/in·°F).
Electrical3
1.4597-SPR conducts electricity at 2.4 % IACS, better than 67% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (45/100), worse than 85% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4597-SPR takes about 42 MJ of energy and emits 3.6 kg of CO₂ — less than 95% of stainless steel grades. Typical recycled content is 60%.
Manufacturability6
1.4597-SPR's machinability is poor (25/100, worse than 88% of stainless steel grades); weldability fair (40/100); formability not recommended (12/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1.4597-SPR
Is 1.4597 easy to machine?
Work-hardens fast — use rigid setups, sharp positive-rake carbide, heavy constant feed, low-to-moderate speed and flood coolant; avoid dwelling or rubbing.
Can 1.4597 be welded?
Weldable by GTAW/GMAW/resistance methods with 308L or 307 filler; keep heat input and interpass temperature low to limit sensitisation and hot cracking from Cu/Mn.
Can 1.4597 be formed, bent or molded?
Excellent deep-drawing and cold-heading behaviour for a 200-series grade thanks to the copper addition; allow extra springback versus 304 and interstage anneal for severe draws.
What surface finishes work on 1.4597?
Takes No.4 brushed, BA and mirror polishes well; passivate after machining/welding and consider PVD or lacquer for decorative outdoor use since chloride resistance is limited.
1.4597 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 |
|---|---|---|
| C≤0.10 % typical for the X8 designation | ≤ 0.1 | 0.07 |
| Si | ≤ 1 | 0.5 |
| Mnaustenite stabiliser replacing nickel | 7 – 9 | 8 |
| P | ≤ 0.05 | 0.03 |
| S | ≤ 0.02 | 0.01 |
| Cr | 16 – 17.5 | 17 |
| Nideliberately low; some mill variants run 0.8–2.0 % | 1 – 2.5 | 1.8 |
| Culowers work-hardening rate, improves cold heading/deep drawing | 2 – 3.5 | 2.8 |
| N | 0.1 – 0.25 | 0.17 |
| Nbpresent only in the Nb-stabilised variant X8CrMnCuNbN17-8-3 | ≤ 0.15 | 0.05 |
| Fe | balance | — |
1.4597-SPR — frequently asked
What is 1.4597-SPR used for?
1.4597-SPR is typically used for appliance trim, kitchenware, structural cladding and cost-sensitive fabrications. In short: low-nickel 304 substitute; strong deep-drawing 200-series; cost-driven sheet stainless.
What is the yield strength of 1.4597-SPR?
1.4597-SPR has a typical yield strength of 1,350 MPa (196 ksi) and a tensile strength of 1,600 MPa (232 ksi) — stronger than 99% of stainless steel grades. Strength varies by condition: see the 8 listed tempers.
Is 1.4597-SPR easy to machine?
Not especially — machinability is rated poor (25/100, worse than 88% of stainless steel grades). Work-hardens fast — use rigid setups, sharp positive-rake carbide, heavy constant feed, low-to-moderate speed and flood coolant; avoid dwelling or rubbing.
Can 1.4597-SPR be welded?
With care — weldability is rated fair (40/100). Weldable by GTAW/GMAW/resistance methods with 308L or 307 filler; keep heat input and interpass temperature low to limit sensitisation and hot cracking from Cu/Mn.
What surface finishes work on 1.4597-SPR?
Takes No.4 brushed, BA and mirror polishes well; passivate after machining/welding and consider PVD or lacquer for decorative outdoor use since chloride resistance is limited.
Can 1.4597-SPR be formed, bent or molded?
Excellent deep-drawing and cold-heading behaviour for a 200-series grade thanks to the copper addition; allow extra springback versus 304 and interstage anneal for severe draws.
What is the maximum service temperature of 1.4597-SPR?
1.4597-SPR is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4597-A and 1.4597-SPR?
A is the default condition — standard stocked condition for sheet, coil, tube and bar — maximum ductility for forming, drawing and welding. SPR: heavily drawn wire for springs, clips and mesh where high tensile strength matters more than corrosion margin. Yield strength is 340 MPa in A versus 1,350 MPa in SPR.
Sources
- EN 10088-2 Stainless steels — sheet/plate and strip for general purposes — CEN (2014)
- ASTM A666 Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat Bar — ASTM International (2015)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Type 201/201Cu low-nickel austenitic stainless data sheets — Outokumpu / Jindal / Tsingshan (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.