Stainless Steel 1.4107
EN 1.4107
1.4107 (GX8CrNi12-1) is a low-carbon 12Cr-1Ni cast stainless steel supplied annealed (+A) or quenched and tempered (+QT1, +QT2), with the low carbon level giving a soft, tough and weldable structure.
Reference datasheet — 1.4107 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 +QT1 condition
1.4107 tempers and conditions
1.4107 is supplied in 3 conditions, soft to hard. +QT1 is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Intermediate foundry condition used for rough machining, straightening and weld repair before final quench and temper. | 300 | 520 | 25 | 160 HB | 3 % IACS |
+QT1Default Quenched and tempered, lower strength / high toughness | Standard supply condition for weldable pump/valve castings where toughness and weld repair matter more than strength. | 400 | 610 | 22 | 185 HB | — |
Quenched and tempered, higher strength | Choose when higher yield strength is required (pressure-bearing or highly loaded castings) and some toughness/machinability can be traded away. | 550 | 700 | 18 | 21 HRC | — |
What is 1.4107?
1.4107 (GX8CrNi12-1) is a low-carbon 12Cr-1Ni cast stainless steel supplied annealed (+A) or quenched and tempered (+QT1, +QT2), with the low carbon level giving a soft, tough and weldable structure. Default-condition properties are 400 MPa yield, 610 MPa tensile, 22% elongation and about 185 HB (90 HRB), which suits sand and investment cast pump and valve parts that must be weld-repaired in the foundry or in the field. Corrosion resistance is moderate (rated 52) and service is limited to about 400 °C. For chloride-bearing or more aggressive water, a cast austenitic such as CF8M is the nearest alternative. 1.4107 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). 1.4107 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 215 GPa (31.2 Msi).
What is 1.4107 used for?
- pump housings
- valve bodies
- water treatment castings
- general corrosion-resistant fittings
Advantages
- Low embodied carbon — 3.2 kg CO₂/kg, better than 95% of stainless steel grades
- Conducts heat well — 25 W/m·K (14.4 BTU/hr·ft·°F), better than 93% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
- Easy to machine — 45/100, better than 84% of stainless steel grades
Limitations
- Limited formability — 20/100, worse than 86% of stainless steel grades
- Limited service temperature — 400°C (752 °F), worse than 78% of stainless steel grades
- Needs corrosion protection — 52/100, worse than 76% of stainless steel grades
- Limited ductility — 22%, worse than 75% of stainless steel grades
1.4107 properties
Typical room-temperature values for 1.4107-+QT1; bars are the position among stainless steel grades.
Physical3
1.4107 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
1.4107 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 215 GPa (31.2 Msi).
Thermal6
1.4107 is rated for continuous service to 400°C (752 °F). It conducts heat at 25 W/m·K (14.4 BTU/hr·ft·°F), better than 93% of stainless steel grades. Thermal expansion is 10.5 µm/m·K (5.83 µin/in·°F).
Electrical3
1.4107 conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (52/100), worse than 76% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4107 takes about 45 MJ of energy and emits 3.2 kg of CO₂ — less than 91% of stainless steel grades. Typical recycled content is 70%.
Manufacturability7
1.4107's machinability is fair (45/100, better than 84% of stainless steel grades); weldability very good (70/100); formability poor (20/100).
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. 1.4107 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4107
Is 1.4107 easy to machine?
Machines like soft 410 stainless — sharp positive-rake carbide, rigid setups, generous coolant; work-hardening and stringy chips are the main nuisances, so rough in +A and finish after +QT.
Can 1.4107 be welded?
Good weldability for a 12Cr steel: preheat ~100–200 °C, use matching 13/4 or austenitic 309L/E410NiMo consumables, then re-temper at 600–650 °C to soften the HAZ.
Can 1.4107 be formed, bent or molded?
Sand and investment castable with normal 12Cr practice; feed heavy sections generously and stress-relieve before final heat treatment — no cold forming.
1.4107 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 carbon for weldability | ≤ 0.1 | 0.07 |
| Si | ≤ 0.8 | 0.5 |
| Mn | ≤ 0.8 | 0.6 |
| P | ≤ 0.04 | |
| S | ≤ 0.03 | |
| Cr | 12 – 13.5 | 12.7 |
| Ni | 1 – 2 | 1.5 |
| Moresidual / optional | ≤ 0.5 | |
| Fe | balance |
What surface finishes work on 1.4107?
Grinds, polishes and passivates well in nitric acid; pickle after welding to restore the passive film, and paint or coat if exposed to chloride-bearing water.
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 1.4107 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- GX8CrNi12-1
How much does 1.4107 cost?
1.4107 is a premium-cost stainless steel ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
1.4107 — frequently asked
What is 1.4107 used for?
1.4107 is typically used for pump housings, valve bodies, water treatment castings and general corrosion-resistant fittings. In short: weldable cast 12Cr stainless; tough low-carbon casting grade; foundry standard for pumps.
What is the yield strength of 1.4107?
1.4107 has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 57% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is 1.4107 easy to machine?
Reasonably — machinability is rated fair (45/100, better than 84% of stainless steel grades). Machines like soft 410 stainless — sharp positive-rake carbide, rigid setups, generous coolant; work-hardening and stringy chips are the main nuisances, so rough in +A and finish after +QT.
Can 1.4107 be welded?
Yes — weldability is rated very good (70/100). Good weldability for a 12Cr steel: preheat ~100–200 °C, use matching 13/4 or austenitic 309L/E410NiMo consumables, then re-temper at 600–650 °C to soften the HAZ.
What surface finishes work on 1.4107?
Grinds, polishes and passivates well in nitric acid; pickle after welding to restore the passive film, and paint or coat if exposed to chloride-bearing water.
Can 1.4107 be formed, bent or molded?
Sand and investment castable with normal 12Cr practice; feed heavy sections generously and stress-relieve before final heat treatment — no cold forming.
What is the maximum service temperature of 1.4107?
1.4107 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does 1.4107 cost?
1.4107 is a premium-cost stainless steel ($$$), 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 — CEN (2010)
- EN 10213 — Steel castings for pressure purposes — CEN (2016)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- Stahlschlüssel (Key to Steel) — Verlag Stahlschlüssel Wegst (2019)
- European stainless steel foundry datasheets, GX8CrNi12-1 (1.4107) — various foundries (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.