Stainless Steel 1.4560 3/4H
Supply condition
EN 1.4560
3/4H = three-quarter hard
Use three-quarter-hard wire for high-strength springy parts at 850 MPa yield and 34 HRC; forming capability is limited and elongation is down to 10%.
Values for the 3/4H condition
Other 1.4560 tempers and conditions
1.4560 is listed in 8 conditions; see the grade overview at 1.4560.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ADefault Solution annealed | Pick the solution-annealed cold-heading quality wire or rod for multi-station cold forming of bolts and screws; yield is only 230 MPa, but formability is at its maximum. | 230 | 540 | 52 | 150 HB | — |
Cold drawn | Use lightly cold drawn bar or wire when close diameter tolerance and 480 MPa yield are needed while keeping enough ductility for heading; elongation drops to 30%. | 480 | 700 | 30 | 20 HRC | 2.4 % IACS |
ISO 3506 property class 70 fastener | Choose the cold-headed ISO 3506 class 70 fastener condition for general stainless bolting: 500 MPa yield, 760 MPa tensile and service to 300 °C. | 500 | 760 | 25 | 215 HB | 2.4 % IACS |
Quarter hard | Pick quarter-hard cold-worked stock for parts needing slightly higher strength at 520 MPa yield yet still bendable or riveted; elongation falls to 25%. | 520 | 760 | 25 | 23 HRC | 2.4 % IACS |
ISO 3506 property class 80 fastener | Pick class 80 when bolting must reach 650 MPa yield and 850 MPa tensile; the heavier cold work cuts elongation to 14% and reduces stress-corrosion margin. | 650 | 850 | 14 | 28 HRC | 2.3 % IACS |
Half hard | Choose half-hard wire for retaining rings, pins and clips at 700 MPa yield and 30 HRC, accepting 15% elongation and only limited further forming. | 700 | 900 | 15 | 30 HRC | 2.4 % IACS |
3/4HThis page Three-quarter hard | Use three-quarter-hard wire for high-strength springy parts at 850 MPa yield and 34 HRC; forming capability is limited and elongation is down to 10%. | 850 | 1,050 | 10 | 34 HRC | 2.4 % IACS |
Full hard | Pick the heavily drawn full-hard spring condition for springs and circlips that need no further forming: 1250 MPa tensile at just 5% elongation. | 1,050 | 1,250 | 5 | 40 HRC | 2.4 % IACS |
What is 1.4560 3/4H?
1.4560 3/4H is 1.4560 supplied in the 3/4H condition — use three-quarter-hard wire for high-strength springy parts at 850 MPa yield and 34 HRC; forming capability is limited and elongation is down to 10%. 1.4560 3/4H has a yield strength of 850 MPa (123 ksi) and a tensile strength of 1,050 MPa (152 ksi) — stronger than 97% of stainless steel grades. Elongation at break is 10% and the elastic modulus is 193 GPa (28 Msi). 1.4560 3/4H has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F). A is the default condition FabDigit quotes; 3/4H is available on request or by drawing note.
Advantages
- High strength — 850 MPa (123 ksi), better than 97% of stainless steel grades
- Polishes to a fine finish — 80/100, better than 89% of stainless steel grades
- Easy to machine — 48/100, better than 88% 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
1.4560 3/4H properties
Typical room-temperature values for 1.4560 3/4H; 23 are specific to this condition. Other listed values are 1.4560 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
1.4560 3/4H has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical15
1.4560 3/4H has a yield strength of 850 MPa (123 ksi) and a tensile strength of 1,050 MPa (152 ksi) — stronger than 97% of stainless steel grades. Elongation at break is 10% and the elastic modulus is 193 GPa (28 Msi).
Thermal6
1.4560 3/4H 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
1.4560 3/4H conducts electricity at 2.4 % IACS, better than 67% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 58% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4560 3/4H takes about 53 MJ of energy and emits 5 kg of CO₂ — less than 67% of stainless steel grades. Typical recycled content is 70%.
Manufacturability7
1.4560 3/4H's machinability is fair (48/100, better than 88% of stainless steel grades); weldability good (55/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1.4560 3/4H
Is 1.4560 easy to machine?
Machinability is slightly better than 304 because copper helps chip breaking, but the material is still gummy and work-hardens. Use sharp positive-rake tools, a large depth of cut with light feed and ample coolant, and avoid frictional heat build-up.
Can 1.4560 be welded?
The low-carbon composition welds well by TIG, MIG and resistance welding with 308L or 308LSi filler. The copper content slightly increases hot-cracking sensitivity, so control heat input and avoid high-dilution multi-pass welds.
Can 1.4560 be formed, bent or molded?
This is the strength of the grade: the low work-hardening rate suits multi-station cold heading, thread rolling and deep drawing. Use soap or oxalate-plus-soap lubrication; die life is clearly better than with 304.
What surface finishes work on 1.4560?
Pickle and passivate per ASTM A967 after cold forming to restore the passive film. Electropolishing, mechanical polishing and chemical colouring all work; anodizing does not apply, and zinc or nickel plating is possible but usually unnecessary.
1.4560 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 C for cold heading; S30430 allows ≤0.08 | ≤ 0.04 | 0.02 |
| Si | ≤ 1 | 0.5 |
| Mn | ≤ 2 | 1 |
| P | ≤ 0.05 | — |
| Slow S to avoid cold-heading cracking | ≤ 0.03 | — |
| Cr | 17 – 19 | 18 |
| Ni | 8.5 – 10.5 | 9.3 |
| CuUS S30430 / XM-7 is 3.0–4.0 % Cu | 1.5 – 2.5 | 2 |
| NN limited to reduce work-hardening rate | ≤ 0.11 | 0.03 |
| Fe | balance | — |
1.4560 3/4H — frequently asked
What is 1.4560 3/4H used for?
1.4560 3/4H is typically used for cold-headed fasteners, screws and rivets and wire products. In short: cold-heading 304 variant; low work-hardening rate; fastener wire grade.
What is the yield strength of 1.4560 3/4H?
1.4560 3/4H has a typical yield strength of 850 MPa (123 ksi) and a tensile strength of 1,050 MPa (152 ksi) — stronger than 97% of stainless steel grades. Strength varies by condition: see the 8 listed tempers.
Is 1.4560 3/4H easy to machine?
Reasonably — machinability is rated fair (48/100, better than 88% of stainless steel grades). Machinability is slightly better than 304 because copper helps chip breaking, but the material is still gummy and work-hardens. Use sharp positive-rake tools, a large depth of cut with light feed and ample coolant, and avoid frictional heat build-up.
Can 1.4560 3/4H be welded?
Yes — weldability is rated good (55/100). The low-carbon composition welds well by TIG, MIG and resistance welding with 308L or 308LSi filler. The copper content slightly increases hot-cracking sensitivity, so control heat input and avoid high-dilution multi-pass welds.
What surface finishes work on 1.4560 3/4H?
Pickle and passivate per ASTM A967 after cold forming to restore the passive film. Electropolishing, mechanical polishing and chemical colouring all work; anodizing does not apply, and zinc or nickel plating is possible but usually unnecessary.
Can 1.4560 3/4H be formed, bent or molded?
This is the strength of the grade: the low work-hardening rate suits multi-station cold heading, thread rolling and deep drawing. Use soap or oxalate-plus-soap lubrication; die life is clearly better than with 304.
What is the maximum service temperature of 1.4560 3/4H?
1.4560 3/4H 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 1.4560-A and 1.4560-FH?
A is the default condition — pick the solution-annealed cold-heading quality wire or rod for multi-station cold forming of bolts and screws; yield is only 230 MPa, but formability is at its maximum. FH: pick the heavily drawn full-hard spring condition for springs and circlips that need no further forming: 1250 MPa tensile at just 5% elongation. Yield strength is 230 MPa in A versus 1,050 MPa in FH.
Sources
- EN 10088-1/-3 Stainless steels — list of grades and technical delivery conditions — CEN (2014)
- ASTM A493 Standard Specification for Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging — ASTM (2023)
- ISO 3506-1 Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — ISO (2020)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Carpenter 302HQ / Type 304Cu cold heading wire data sheet — Carpenter Technology (2020)
- Outokumpu Corrosion Handbook — Outokumpu (2015)
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.