Stainless Steel
Stainless Steel 1.4310
Properties, tempers, machining, finishes and uses — values shown for the +C1000 condition.
1.4310 is a metastable austenitic 17/7 stainless (X10CrNi18-8, S30100, 301, SUS301) with 0.05–0.15 % C that partly transforms to martensite during cold rolling, so strength is set by temper rather than by heat treatment.
Reference datasheet — 1.4310 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
What is 1.4310?
1.4310 is a metastable austenitic 17/7 stainless (X10CrNi18-8, S30100, 301, SUS301) with 0.05–0.15 % C that partly transforms to martensite during cold rolling, so strength is set by temper rather than by heat treatment. It is supplied mainly as cold-rolled spring strip and wire from +C700 to +C1900, plus a stress-relieved +C1000+SR condition; the default temper gives 780 MPa yield, 1100 MPa tensile, 10 % elongation, 32 HRC and 190 GPa modulus. Formability (score 40) and service temperature (300 °C) are limited, welding destroys the cold-work strength, and corrosion resistance sits below 1.4301. 1.4310 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 67% of stainless steel grades. It melts at 1,400°C (2,552 °F). 1.4310 has a yield strength of 780 MPa (113 ksi) and a tensile strength of 1,100 MPa (160 ksi) — stronger than 95% of stainless steel grades. Elongation at break is 10% and the elastic modulus is 190 GPa (27.6 Msi).
What is 1.4310 used for?
- springs
- clips
- cutlery
- structural strip for cold-formed parts
Advantages
- High strength — 780 MPa (113 ksi), better than 95% of stainless steel grades
Limitations
- Limited ductility — 10%, worse than 98% of stainless steel grades
- Limited service temperature — 300°C (572 °F), worse than 90% of stainless steel grades
- Needs corrosion protection — 52/100, worse than 77% of stainless steel grades
1.4310 properties
Typical room-temperature values for 1.4310-+C1000 (the workhorse spring-strip temper: good balance of spring force, bendability and availability), compiled from standards, handbooks and producer data. Each bar shows where the value sits among the stainless steel grades in FabDigit's library — further right is higher. Other conditions have their own pages: see tempers.
Physical3
1.4310 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 67% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical11
1.4310 has a yield strength of 780 MPa (113 ksi) and a tensile strength of 1,100 MPa (160 ksi) — stronger than 95% of stainless steel grades. Elongation at break is 10% and the elastic modulus is 190 GPa (27.6 Msi).
Thermal6
1.4310 is rated for continuous service to 300°C (572 °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
1.4310 conducts electricity at 2.4 % IACS, better than 67% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (52/100), worse than 77% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4310 takes about 53 MJ of energy and emits 4.6 kg of CO₂ — less than 67% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
1.4310's machinability is poor (28/100, worse than 80% of stainless steel grades); weldability good (55/100); formability fair (40/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
1.4310 tempers and conditions
1.4310 is supplied in 10 conditions, each with its own property set. Open one for its full datasheet. +C1000 is what FabDigit quotes unless the drawing says otherwise.
- +C1000DefaultThe workhorse spring-strip temper: good balance of spring force, bendability and availability.780 MPa yield · 32 HRC
- +C1900Maximum-strength razor/feeler-gauge type strip; essentially flat parts only, no forming.1,750 MPa yield · 53 HRC
- +C1700Very high-strength thin strip (typically <0.5 mm) for miniature springs and contact blades.1,550 MPa yield · 50 HRC
- +C1500Extra-hard thin strip for high-force springs and shims where only gentle bending is needed.1,350 MPa yield · 47 HRC
- +C1300Full-hard spring temper for flat springs, contact strips and clamping bands.1,150 MPa yield · 43 HRC
- +C1150Three-quarter-hard strip for higher spring force with generous bend radii.950 MPa yield · 38 HRC
- +C1000+SRPost-form low-temperature age to raise elastic limit, reduce spring set/relaxation and stabilise shape.950 MPa yield · 35 HRC
- +C800Quarter-hard strip for clips, brackets and shims that still need 90° bending across the rolling direction.570 MPa yield · 25 HRC
- +C700Lightly rolled temper when moderate strength must be combined with substantial forming/bending.450 MPa yield · 99 HRB
- +ATPick for deep-drawn/stamped parts that will be work-hardened in service or for material to be re-rolled to temper.280 MPa yield · 165 HB
| Condition | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
+C1000Default cold rolled, Rm 1000–1200 MPa (≈ 1/2 hard) | The workhorse spring-strip temper: good balance of spring force, bendability and availability. | 780 | 1,100 | 10 | 32 HRC | — |
solution annealed (soft, cold-formable) | Pick for deep-drawn/stamped parts that will be work-hardened in service or for material to be re-rolled to temper. | 280 | 700 | 50 | 165 HB | — |
cold rolled, Rm 700–900 MPa (≈ 1/8 hard) | Lightly rolled temper when moderate strength must be combined with substantial forming/bending. | 450 | 780 | 25 | 99 HRB | — |
cold rolled, Rm 800–1000 MPa (≈ 1/4 hard) | Quarter-hard strip for clips, brackets and shims that still need 90° bending across the rolling direction. | 570 | 880 | 18 | 25 HRC | — |
cold rolled, Rm 1150–1350 MPa (≈ 3/4 hard) | Three-quarter-hard strip for higher spring force with generous bend radii. | 950 | 1,250 | 6 | 38 HRC | — |
cold rolled, Rm 1300–1500 MPa (full hard) | Full-hard spring temper for flat springs, contact strips and clamping bands. | 1,150 | 1,400 | 3 | 43 HRC | — |
cold rolled, Rm 1500–1700 MPa (extra hard) | Extra-hard thin strip for high-force springs and shims where only gentle bending is needed. | 1,350 | 1,600 | 2 | 47 HRC | — |
cold rolled, Rm 1700–1900 MPa (spring hard, thin gauge) | Very high-strength thin strip (typically <0.5 mm) for miniature springs and contact blades. | 1,550 | 1,800 | 1.5 | 50 HRC | — |
cold rolled, Rm ≥ 1900 MPa (ultra hard, very thin gauge) | Maximum-strength razor/feeler-gauge type strip; essentially flat parts only, no forming. | 1,750 | 2,000 | 1 | 53 HRC | — |
cold rolled then aged 350–450 °C | Post-form low-temperature age to raise elastic limit, reduce spring set/relaxation and stabilise shape. | 950 | 1,180 | 8 | 35 HRC | — |
Working with 1.4310
Is 1.4310 easy to machine?
Gummy and strongly work-hardening — use rigid setups, sharp positive-rake carbide, heavy positive feed and flood coolant; cold-worked tempers cut better but load tools more, blanking/stamping is the preferred route.
Can 1.4310 be welded?
Resistance, laser and TIG weld readily (308L/307 filler); the 0.05–0.15 % C invites carbide precipitation, and welding destroys the cold-work strength in the HAZ, so spring parts should be joined away from the working section.
Can 1.4310 be formed, bent or molded?
Anneal-temper stock stamps and deep-draws superbly (heavy springback, strong work-hardening, may need interstage anneals); high +C tempers bend only across the rolling direction with generous radii (≥1–3 t).
Strength versus weight in the stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. 1.4310 is highlighted; hover a dot for its name, or open the interactive family chart.
1.4310 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 |
|---|---|---|
| Chigh C is what enables the strong work hardening | 0.05 – 0.15 | 0.11 |
| Si | ≤ 2 | 0.6 |
| Mn | ≤ 2 | 1.2 |
| P | ≤ 0.05 | — |
| S | ≤ 0.02 | — |
| Cr | 16 – 19 | 17.3 |
| Ni | 6 – 9.5 | 7.3 |
| Moresidual limit per EN 10088-2 | ≤ 0.8 | — |
| N | ≤ 0.11 | 0.04 |
| Fe | balance | — |
What surface finishes work on 1.4310?
Passivate per ASTM A967 or electropolish after forming; 2R/BA and No.4 finishes polish well; do not anodize — plating (Ni, Sn) needs a Woods-nickel strike.
Surface treatments FabDigit runs on stainless steel parts — pick them in the quote configurator or call them out on the drawing.
Passivation
- Pickling
Plating
- Electroless Nickel (EN)
- Gold Plating
- Hard Chrome Plating
- Silver Plating
Organic Coating
- Epoxy Coating
Thermal Spray
- Plasma Spray
Equivalent designations
Standards and trade names that resolve to Stainless Steel 1.4310 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- S30100
- AISI / SAE
- 301
- EN / DIN / Werkstoff-Nr.
- X10CrNi18-8
- GB (China)
- 12Cr17Ni7
- JIS
- SUS301
- Also called
How much does 1.4310 cost?
1.4310 is a standard-cost stainless steel ($$), cheaper than about 72% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
1.4310 — frequently asked
What is 1.4310 used for?
1.4310 is typically used for springs, clips, cutlery and structural strip for cold-formed parts. In short: work-hardening spring stainless; tempers to 1900 MPa; strength by cold rolling.
What is the yield strength of 1.4310?
1.4310 has a typical yield strength of 780 MPa (113 ksi) and a tensile strength of 1,100 MPa (160 ksi) — stronger than 95% of stainless steel grades. Strength varies by condition: see the 10 listed tempers.
Is 1.4310 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 80% of stainless steel grades). Gummy and strongly work-hardening — use rigid setups, sharp positive-rake carbide, heavy positive feed and flood coolant; cold-worked tempers cut better but load tools more, blanking/stamping is the preferred route.
Can 1.4310 be welded?
Yes — weldability is rated good (55/100). Resistance, laser and TIG weld readily (308L/307 filler); the 0.05–0.15 % C invites carbide precipitation, and welding destroys the cold-work strength in the HAZ, so spring parts should be joined away from the working section.
What surface finishes work on 1.4310?
Passivate per ASTM A967 or electropolish after forming; 2R/BA and No.4 finishes polish well; do not anodize — plating (Ni, Sn) needs a Woods-nickel strike.
Can 1.4310 be formed, bent or molded?
Anneal-temper stock stamps and deep-draws superbly (heavy springback, strong work-hardening, may need interstage anneals); high +C tempers bend only across the rolling direction with generous radii (≥1–3 t).
What is the maximum service temperature of 1.4310?
1.4310 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.
How much does 1.4310 cost?
1.4310 is a standard-cost stainless steel ($$), cheaper than about 72% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 10088-2 Stainless steels — Technical delivery conditions for sheet/plate and strip — CEN (2014)
- EN 10151 Stainless steel strip for springs — Technical delivery conditions — CEN (2002)
- ASTM A666 Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat Bar — ASTM International (2015)
- GB/T 3280 (12Cr17Ni7) — SAC (2015)
- JIS G4313 Cold-rolled stainless steel strip for springs (SUS301) — JSA (2011)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- Precision stainless spring strip 1.4310 data sheets — Outokumpu / Sandvik / Aperam (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.