Stainless Steel 1.4865
EN 1.4865
EN 1.4865 (GX40NiCrSi38-19, ASTM A297 Grade HT) is a cast heat-resistant austenitic steel with roughly 38% Ni and 19% Cr plus silicon, supplied as sand, investment or centrifugal castings.
Reference datasheet — 1.4865 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 AC condition
1.4865 tempers and conditions
1.4865 is supplied in 3 conditions, soft to hard. AC 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 |
|---|---|---|---|---|---|---|
As-cast plus stress-relief anneal | Pick for large or heavily welded/machined castings where casting and welding residual stresses would cause distortion or cracking on first heat-up. | 230 | 460 | 11 | 170 HB | 1.7 % IACS |
ACDefault Spheroidize annealed | Standard supply condition for furnace fixtures, trays and radiant-tube parts; no heat treatment is specified in EN 10295 for this grade. | 240 | 470 | 10 | 175 HB | 1.7 % IACS |
Service-exposed / thermally aged | Reference condition for design of parts already in long-term high-temperature service — secondary carbide precipitation raises hardness and strength but collapses room-temperature ductility and impact toughness. | 290 | 480 | 3 | 200 HB | 1.8 % IACS |
Supply forms, finishes and certifications
Ways 1.4865 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
CC | Centrifugally cast | Surface finish |
What is 1.4865?
EN 1.4865 (GX40NiCrSi38-19, ASTM A297 Grade HT) is a cast heat-resistant austenitic steel with roughly 38% Ni and 19% Cr plus silicon, supplied as sand, investment or centrifugal castings. The high nickel content gives good carburization and thermal-shock resistance for furnace and kiln service to 1100 °C, which is why it is used for fixtures, trays and radiant-tube hardware. Limits are low room-temperature ductility (about 240 MPa yield, 470 MPa tensile, 10% elongation, 175 HB), poor machinability (score 22) and embrittlement after long high-temperature exposure. Where higher creep strength is needed, HK-type castings are the usual alternative. 1.4865 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,310°C (2,390 °F). 1.4865 has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 96% of stainless steel grades. Elongation at break is 10% and the elastic modulus is 160 GPa (23.2 Msi).
What is 1.4865 used for?
- furnace fixtures and trays
- kiln rollers
- radiant tube supports
Advantages
- High service temperature — 1,100°C (2,012 °F), better than 96% of stainless steel grades
Limitations
- Low stiffness — 160 GPa (23.2 Msi), worse than 100% of stainless steel grades
- Limited formability — 5/100, worse than 99% of stainless steel grades
- Limited ductility — 10%, worse than 98% of stainless steel grades
- Low strength — 240 MPa (34.8 ksi), worse than 96% of stainless steel grades
- Hard to polish — 45/100, worse than 96% of stainless steel grades
1.4865 properties
Typical room-temperature values for 1.4865-AC; bars are the position among stainless steel grades.
Physical3
1.4865 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,310°C (2,390 °F).
Mechanical15
1.4865 has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 96% of stainless steel grades. Elongation at break is 10% and the elastic modulus is 160 GPa (23.2 Msi).
Thermal6
1.4865 is rated for continuous service to 1,100°C (2,012 °F). It conducts heat at 13.5 W/m·K (7.8 BTU/hr·ft·°F), worse than 83% of stainless steel grades. Thermal expansion is 15.5 µm/m·K (8.61 µin/in·°F).
Electrical3
1.4865 conducts electricity at 1.7 % IACS, worse than 93% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 62% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4865 takes about 100 MJ of energy and emits 7 kg of CO₂ — more than 98% of stainless steel grades. Typical recycled content is 65%.
Manufacturability8
1.4865's machinability is poor (22/100, worse than 95% of stainless steel grades); weldability fair (40/100); formability not recommended (5/100).
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. 1.4865 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4865
Is 1.4865 easy to machine?
Difficult: use rigid setups, sharp positive-rake carbide (or ceramic for finishing), low speed and heavy positive feed to cut under the work-hardened skin, plenty of coolant; avoid dwelling and grind rather than turn on aged/embrittled parts.
Can 1.4865 be welded?
Weldable with matching 38Ni-19Cr or Ni-base (ERNiCr-3 / 82) filler; preheat 150–250 °C, low heat input, hammer-peen and post-weld stress relieve — aged material must be locally solution-annealed or ground back before repair to avoid cracking.
Can 1.4865 be formed, bent or molded?
Cast only — sand, investment and centrifugal casting all work well; provide generous fillets and directional feeding because solidification shrinkage and hot-tear sensitivity are high with the coarse austenitic grain.
1.4865 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 |
|---|---|---|
| C | 0.3 – 0.5 | 0.4 |
| Siraises scaling resistance | 1 – 2.5 | 1.6 |
| Mn | ≤ 2 | 1 |
| Pimpurity | ≤ 0.04 | — |
| Simpurity | ≤ 0.03 | — |
| Cr | 18 – 21 | 19 |
| Ni | 36 – 39 | 37.5 |
| Moresidual, restricted by most specs | ≤ 0.5 | — |
| Fe | balance | — |
What surface finishes work on 1.4865?
Normally supplied shot-blasted and as-cast; machined sealing faces can be ground or lapped, and a self-forming Cr₂O₃/SiO₂ scale is the working surface — no coating or plating is needed or recommended for furnace service.
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 1.4865 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- GX40NiCrSi38-19
- Similar grades
- A297 Grade HT
How much does 1.4865 cost?
1.4865 is a high-cost stainless steel ($$$$), pricier than about 78% 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.
1.4865 — frequently asked
What is 1.4865 used for?
1.4865 is typically used for furnace fixtures and trays, kiln rollers and radiant tube supports. In short: high-nickel carburization resistance; 1100 °C cast service; cast forms only.
What is the yield strength of 1.4865?
1.4865 has a typical yield strength of 240 MPa (34.8 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 96% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is 1.4865 easy to machine?
Not especially — machinability is rated poor (22/100, worse than 95% of stainless steel grades). Difficult: use rigid setups, sharp positive-rake carbide (or ceramic for finishing), low speed and heavy positive feed to cut under the work-hardened skin, plenty of coolant; avoid dwelling and grind rather than turn on aged/embrittled parts.
Can 1.4865 be welded?
With care — weldability is rated fair (40/100). Weldable with matching 38Ni-19Cr or Ni-base (ERNiCr-3 / 82) filler; preheat 150–250 °C, low heat input, hammer-peen and post-weld stress relieve — aged material must be locally solution-annealed or ground back before repair to avoid cracking.
What surface finishes work on 1.4865?
Normally supplied shot-blasted and as-cast; machined sealing faces can be ground or lapped, and a self-forming Cr₂O₃/SiO₂ scale is the working surface — no coating or plating is needed or recommended for furnace service.
Can 1.4865 be formed, bent or molded?
Cast only — sand, investment and centrifugal casting all work well; provide generous fillets and directional feeding because solidification shrinkage and hot-tear sensitivity are high with the coarse austenitic grain.
What is the maximum service temperature of 1.4865?
1.4865 is rated for continuous use to about 1,100°C (2,012 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4865-AC and 1.4865 Aged?
AC is the default condition — standard supply condition for furnace fixtures, trays and radiant-tube parts; no heat treatment is specified in EN 10295 for this grade. Aged: reference condition for design of parts already in long-term high-temperature service — secondary carbide precipitation raises hardness and strength but collapses room-temperature ductility and impact toughness. Yield strength is 240 MPa in AC versus 290 MPa in Aged.
How much does 1.4865 cost?
1.4865 is a high-cost stainless steel ($$$$), pricier than about 78% 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 10295 — Heat resistant steel castings — CEN (2002)
- ASTM A297/A297M — Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application (Grade HT) — ASTM (2020)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys (Heat-Resistant Castings) — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (High-temperature carburization and oxidation) — ASM International (2005)
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.