Stainless Steel 1.4011
EN 1.4011
1.4011 (GX12Cr12, ASTM A743 Gr.
Reference datasheet — 1.4011 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 N+T condition
1.4011 tempers and conditions
1.4011 is supplied in 5 conditions, soft to hard. N+T is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution annealed | Softest supply state for heavy machining or straightening before final hardening and tempering. | 415 | 650 | 26 | 185 HB | — |
Hardened and tempered 675–730 °C | Choose when impact toughness, weld repairability and best corrosion behaviour matter more than strength (hydro turbine, seawater-adjacent pump parts). | 480 | 690 | 26 | 200 HB | — |
N+TDefault Normalized and tempered | Standard supply condition for pump and valve castings — balanced strength, ductility and corrosion resistance per ASTM A743 CA15 / EN 10283 +QT1. | 550 | 760 | 22 | 20 HRC | — |
As fabricated | Raw foundry state — hard, brittle and highly stressed; only an intermediate before annealing or hardening + tempering. | 700 | 1,000 | 5 | 42 HRC | — |
Hardened and tempered ~315 °C | Pick for wear surfaces, valve trim and seats needing ~38–42 HRC; ductility, toughness and corrosion resistance are all reduced. | 1,000 | 1,250 | 8 | 40 HRC | — |
What is 1.4011?
1.4011 (GX12Cr12, ASTM A743 Gr. CA15, UNS J91150) is the European 12% chromium cast martensitic stainless steel, hardenable by austenitising, quenching and tempering. It serves pump casings, valve bodies and trim, turbine and compressor parts, normally supplied normalised-and-tempered or quenched-and-tempered at about 550 MPa yield, 760 MPa tensile, 22% elongation and 225 HB (20 HRC), with service to 650 °C. Corrosion resistance is the lowest in this family (score 40) and welding needs 200–300 °C preheat with a 620–700 °C post-weld temper; choose 1.4008/CA15M for Mo-bearing media or 1.4317/CA6NM where weldability matters. 1.4011 has a density of 7.61 g/cm³ (0.275 lb/in³), lighter than 96% of stainless steel grades. It melts at 1,480°C (2,696 °F). 1.4011 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 83% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 200 GPa (29 Msi).
What is 1.4011 used for?
- Pump casings
- Valve bodies and trim
- Turbine parts
- Compressor components
Advantages
- High electrical conductivity — 3 % IACS, better than 95% of stainless steel grades
- Low embodied carbon — 3.4 kg CO₂/kg, better than 91% of stainless steel grades
- Conducts heat well — 24.9 W/m·K (14.4 BTU/hr·ft·°F), better than 87% of stainless steel grades
- Easy to machine — 45/100, better than 84% of stainless steel grades
- High strength — 550 MPa (79.8 ksi), better than 83% of stainless steel grades
Limitations
- Limited formability — 10/100, worse than 95% of stainless steel grades
- Needs corrosion protection — 40/100, worse than 93% of stainless steel grades
- Low fracture toughness — 65 MPa·√m (59.2 ksi·√in), worse than 85% of stainless steel grades
- Difficult to weld — 40/100, worse than 83% of stainless steel grades
- Limited ductility — 22%, worse than 75% of stainless steel grades
1.4011 properties
Typical room-temperature values for 1.4011-N+T; bars are the position among stainless steel grades.
Physical3
1.4011 has a density of 7.61 g/cm³ (0.275 lb/in³), lighter than 96% of stainless steel grades. It melts at 1,480°C (2,696 °F).
Mechanical16
1.4011 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 83% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1.4011 is rated for continuous service to 650°C (1,202 °F). It conducts heat at 24.9 W/m·K (14.4 BTU/hr·ft·°F), better than 87% of stainless steel grades. Thermal expansion is 10.5 µm/m·K (5.83 µin/in·°F).
Electrical3
1.4011 conducts electricity at 3 % IACS, better than 95% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (40/100), worse than 93% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4011 takes about 42 MJ of energy and emits 3.4 kg of CO₂ — less than 95% of stainless steel grades. Typical recycled content is 75%.
Manufacturability7
1.4011's machinability is fair (45/100, better than 84% of stainless steel grades); weldability fair (40/100); formability not recommended (10/100).
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. 1.4011 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4011
Is 1.4011 easy to machine?
Machine in the annealed or high-tempered state with rigid setups, sharp carbide tooling and moderate speeds (~60–100 m/min); the material work-hardens and gets gummy if feeds are too light.
Can 1.4011 be welded?
Weldable with matching 410 or austenitic 309/316 filler but needs 200–300 °C preheat, interpass control and a post-weld temper at 620–700 °C to avoid hard, cracking-prone HAZ martensite.
Can 1.4011 be formed, bent or molded?
Sand or investment cast with generous feeding; avoid abrupt section changes to limit hot tearing and quench cracking, and always homogenise/temper after hardening.
1.4011 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 10283 GX12Cr12 / ASTM A743 CA15 | ≤ 0.15 | 0.12 |
| SiASTM CA15 allows up to 1.50 | ≤ 0.8 | 0.6 |
| MnASTM CA15 allows up to 1.00 | ≤ 0.8 | 0.6 |
| P | ≤ 0.04 | 0.02 |
| SASTM CA15 max 0.040 | ≤ 0.03 | 0.02 |
| CrASTM CA15 11.5–14.0 | 11.5 – 13.5 | 12.5 |
| Ni | ≤ 1 | 0.5 |
| Mooptional/residual | ≤ 0.5 | 0.2 |
| Fe | balance |
What surface finishes work on 1.4011?
Passivate in nitric or citric acid after machining for best corrosion resistance; takes a good polish, and can be hard chrome plated or nitrided for wear surfaces (no anodizing).
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 1.4011 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- GX12Cr12
- Similar grades
- A743 Gr. CA15J91150
How much does 1.4011 cost?
1.4011 is a premium-cost stainless steel ($$$), cheaper than about 51% 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.
1.4011 — frequently asked
What is 1.4011 used for?
1.4011 is typically used for pump casings, valve bodies and trim, turbine parts and compressor components. In short: baseline 12% Cr casting; 650 °C service ceiling; lowest corrosion resistance here.
What is the yield strength of 1.4011?
1.4011 has a typical yield strength of 550 MPa (79.8 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 83% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is 1.4011 easy to machine?
Reasonably — machinability is rated fair (45/100, better than 84% of stainless steel grades). Machine in the annealed or high-tempered state with rigid setups, sharp carbide tooling and moderate speeds (~60–100 m/min); the material work-hardens and gets gummy if feeds are too light.
Can 1.4011 be welded?
With care — weldability is rated fair (40/100). Weldable with matching 410 or austenitic 309/316 filler but needs 200–300 °C preheat, interpass control and a post-weld temper at 620–700 °C to avoid hard, cracking-prone HAZ martensite.
What surface finishes work on 1.4011?
Passivate in nitric or citric acid after machining for best corrosion resistance; takes a good polish, and can be hard chrome plated or nitrided for wear surfaces (no anodizing).
Can 1.4011 be formed, bent or molded?
Sand or investment cast with generous feeding; avoid abrupt section changes to limit hot tearing and quench cracking, and always homogenise/temper after hardening.
What is the maximum service temperature of 1.4011?
1.4011 is rated for continuous use to about 650°C (1,202 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4011 N+T and 1.4011-QT315?
N+T is the default condition — standard supply condition for pump and valve castings — balanced strength, ductility and corrosion resistance per ASTM A743 CA15 / EN 10283 +QT1. QT315: pick for wear surfaces, valve trim and seats needing ~38–42 HRC; ductility, toughness and corrosion resistance are all reduced. Yield strength is 550 MPa in N+T versus 1,000 MPa in QT315.
How much does 1.4011 cost?
1.4011 is a premium-cost stainless steel ($$$), cheaper than about 51% 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 10283 — Corrosion resistant steel castings (GX12Cr12, 1.4011) — CEN (2010)
- ASTM A743/A743M — Castings, Iron-Chromium, Corrosion Resistant (CA15) — ASTM International (2021)
- ASM Specialty Handbook: Stainless Steels — ASM International (1994)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Steel Founders' Society of America — Steel Castings Handbook, Supplement 8 (High Alloy Data Sheets) — SFSA (2004)
- GB/T 2100 / GB/T 6967 — (ZG1Cr13 ) — SAC (2017)
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.