Stainless Steel 1.4024
EN 1.4024
1.4024 (X15Cr13) is a 13% Cr martensitic stainless with carbon between 1.4006 and 1.4021, trading peak hardness for toughness and easier machining (score 55).
Reference datasheet — 1.4024 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.
Values for the +A condition
1.4024 tempers and conditions
1.4024 is supplied in 4 conditions, soft to hard. +A is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
+ADefault Annealed | Standard stocked bar condition for machining, forming and subsequent hardening by the fabricator. | 300 | 530 | 25 | 175 HB | — |
Quenched and tempered to 550 MPa minimum tensile class | High-temperature tempered condition for shafts and fittings needing maximum toughness and ductility with moderate strength. | 400 | 620 | 20 | 190 HB | — |
Quenched and tempered to 650 MPa minimum tensile class | Standard engineering condition for pump shafts, valve stems and fasteners needing higher strength with still-acceptable impact values. | 500 | 720 | 17 | 21 HRC | — |
Hardened and low-temperature tempered | Choose for wear parts, cutlery blanks and small tooling where hardness and edge retention outweigh toughness. | 1,050 | 1,350 | 10 | 43 HRC | — |
What is 1.4024?
1.4024 (X15Cr13) is a 13% Cr martensitic stainless with carbon between 1.4006 and 1.4021, trading peak hardness for toughness and easier machining (score 55). It is used for quench-and-tempered bar and forgings such as turbine blading, shafts and valve parts, and is stocked in +A, +QT550, +QT650 and a hardened low-temper condition; annealed values are about 300 MPa yield, 530 MPa tensile, 25% elongation and 175 HB, with service to 550 °C. Corrosion resistance is the weakest attribute (score 34), so it suits mild atmospheres only; 1.4006 is the nearest alternative when weldability is the priority. 1.4024 has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,450°C (2,642 °F). 1.4024 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 68% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 215 GPa (31.2 Msi).
What is 1.4024 used for?
- turbine blades
- valve components
- shafts
Advantages
- Conducts heat well — 30 W/m·K (17.3 BTU/hr·ft·°F), better than 99% of stainless steel grades
- Low embodied carbon — 3 kg CO₂/kg, better than 97% of stainless steel grades
- Easy to machine — 55/100, better than 94% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
Limitations
- Needs corrosion protection — 34/100, worse than 98% of stainless steel grades
- Difficult to weld — 40/100, worse than 83% of stainless steel grades
- Low fracture toughness — 75 MPa·√m (68.3 ksi·√in), worse than 81% of stainless steel grades
1.4024 properties
Typical room-temperature values for 1.4024-+A; bars are the position among stainless steel grades.
Physical3
1.4024 has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,450°C (2,642 °F).
Mechanical16
1.4024 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 68% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 215 GPa (31.2 Msi).
Thermal6
1.4024 is rated for continuous service to 550°C (1,022 °F). It conducts heat at 30 W/m·K (17.3 BTU/hr·ft·°F), better than 99% of stainless steel grades. Thermal expansion is 10.5 µm/m·K (5.83 µin/in·°F).
Electrical3
1.4024 conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is poor (34/100), worse than 98% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4024 takes about 42 MJ of energy and emits 3 kg of CO₂ — less than 95% of stainless steel grades. Typical recycled content is 65%.
Manufacturability6
1.4024's machinability is good (55/100, better than 94% of stainless steel grades); weldability fair (40/100); formability fair (50/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. 1.4024 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4024
Is 1.4024 easy to machine?
Machine in the annealed or ≤250 HB tempered condition with sharp, rigid tooling, positive rake and generous coolant; the alloy work-hardens moderately and forms stringy chips, so free-machining sulphurised grades are preferred for screw-machine work.
Can 1.4024 be welded?
Weldable with matched 13Cr or austenitic 309/308L filler, but preheat to 200–300 °C and post-weld temper at 700–750 °C are needed to avoid hard, crack-prone martensite in the HAZ.
Can 1.4024 be formed, bent or molded?
Cold bending and light forming only in the annealed state with generous radii; hot working at 1100–850 °C followed by slow cooling and full anneal gives the best results.
1.4024 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 |
|---|---|---|
| CEN 10088-3 X15Cr13 | 0.12 – 0.17 | 0.15 |
| Si | ≤ 1 | 0.4 |
| Mn | ≤ 1 | 0.5 |
| P | ≤ 0.04 | 0.03 |
| Sfree-machining variants use higher S | ≤ 0.03 | 0.02 |
| Cr | 12 – 14 | 13 |
| Niresidual, some standards limit to 0.75 | ≤ 0.75 | 0.3 |
| Fe | balance |
What surface finishes work on 1.4024?
Takes a fine mechanical polish and is best passivated in nitric acid after hardening; hard chrome, nitriding or PVD coatings are used where wear or chloride exposure exceeds the base alloy's capability.
Surface treatments FabDigit runs on stainless steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Organic Coating
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Stainless Steel 1.4024 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- X15Cr13
- Similar grades
- 420
How much does 1.4024 cost?
1.4024 is a standard-cost stainless steel ($$), cheaper than about 71% 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.
1.4024 — frequently asked
What is 1.4024 used for?
1.4024 is typically used for turbine blades, valve components and shafts. In short: toughness-biased 13% Cr grade; better machining than 1.4021; lowest corrosion rating of trio.
What is the yield strength of 1.4024?
1.4024 has a typical yield strength of 300 MPa (43.5 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 68% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is 1.4024 easy to machine?
Reasonably — machinability is rated good (55/100, better than 94% of stainless steel grades). Machine in the annealed or ≤250 HB tempered condition with sharp, rigid tooling, positive rake and generous coolant; the alloy work-hardens moderately and forms stringy chips, so free-machining sulphurised grades are preferred for screw-machine work.
Can 1.4024 be welded?
With care — weldability is rated fair (40/100). Weldable with matched 13Cr or austenitic 309/308L filler, but preheat to 200–300 °C and post-weld temper at 700–750 °C are needed to avoid hard, crack-prone martensite in the HAZ.
What surface finishes work on 1.4024?
Takes a fine mechanical polish and is best passivated in nitric acid after hardening; hard chrome, nitriding or PVD coatings are used where wear or chloride exposure exceeds the base alloy's capability.
Can 1.4024 be formed, bent or molded?
Cold bending and light forming only in the annealed state with generous radii; hot working at 1100–850 °C followed by slow cooling and full anneal gives the best results.
What is the maximum service temperature of 1.4024?
1.4024 is rated for continuous use to about 550°C (1,022 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does 1.4024 cost?
1.4024 is a standard-cost stainless steel ($$), cheaper than about 71% 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 10088-3 Stainless steels — Semi-finished products, bars, rods, wire and sections — CEN (2014)
- EN 10088-1 Stainless steels — List of stainless steels (physical properties) — CEN (2014)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- GB/T 1220 (2Cr13/1Cr13 comparison grades) — SAC (2007)
- Martensitic stainless bar datasheets (Outokumpu / Sandvik / Böhler 13Cr grades) — various producers (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.