Stainless Steel 1.4823-SR (Stress relieved)
Heat-treated state
EN 1.4823 · UNS J93403 · ASTM A297 Grade HD
Pick when thick, complex castings must be machined to tight tolerance or welded, to relieve solidification stresses without changing the carbide structure.
Values for the SR condition
Other 1.4823 tempers and conditions
1.4823 is listed in 3 conditions; see the grade overview at 1.4823.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution annealed | Occasionally specified to homogenise the carbide network and restore some ductility before heavy machining or on castings that saw low-temperature ordering embrittlement. | 265 | 490 | 9 | 190 HB | 1.9 % IACS |
SRThis page Stress relieved | Pick when thick, complex castings must be machined to tight tolerance or welded, to relieve solidification stresses without changing the carbide structure. | 275 | 505 | 7 | 195 HB | 1.9 % IACS |
ACDefault Spheroidize annealed | Default supply condition for furnace hardware — heat-resistant castings are normally used as-cast because service temperature exceeds any heat-treatment benefit. | 285 | 520 | 6 | 200 HB | 1.9 % IACS |
What is 1.4823-SR?
1.4823-SR is 1.4823 heat treated to SR — pick when thick, complex castings must be machined to tight tolerance or welded, to relieve solidification stresses without changing the carbide structure. 1.4823-SR has a yield strength of 275 MPa (39.9 ksi) and a tensile strength of 505 MPa (73.2 ksi) — weaker than 77% of stainless steel grades. Elongation at break is 7% and the elastic modulus is 195 GPa (28.3 Msi). 1.4823-SR has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 98% of stainless steel grades. It melts at 1,370°C (2,498 °F). AC is the default condition FabDigit quotes; SR is available on request or by drawing note.
Advantages
- High service temperature — 1,050°C (1,922 °F), better than 91% of stainless steel grades
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
Limitations
- Limited ductility — 7%, worse than 99% of stainless steel grades
- Hard to polish — 40/100, worse than 99% of stainless steel grades
- Low fracture toughness — 38 MPa·√m (34.6 ksi·√in), worse than 97% of stainless steel grades
- Limited formability — 6/100, worse than 97% of stainless steel grades
- Difficult to machine — 24/100, worse than 93% of stainless steel grades
1.4823-SR properties
Typical room-temperature values for 1.4823-SR; 22 are specific to this condition. Other listed values are 1.4823 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
1.4823-SR has a density of 7.6 g/cm³ (0.275 lb/in³), lighter than 98% of stainless steel grades. It melts at 1,370°C (2,498 °F).
Mechanical16
1.4823-SR has a yield strength of 275 MPa (39.9 ksi) and a tensile strength of 505 MPa (73.2 ksi) — weaker than 77% of stainless steel grades. Elongation at break is 7% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
1.4823-SR is rated for continuous service to 1,050°C (1,922 °F). It conducts heat at 15.5 W/m·K (8.96 BTU/hr·ft·°F), better than 53% of stainless steel grades. Thermal expansion is 11.5 µm/m·K (6.39 µin/in·°F).
Electrical3
1.4823-SR conducts electricity at 1.9 % IACS, worse than 84% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (53/100), worse than 75% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4823-SR takes about 50 MJ of energy and emits 3.6 kg of CO₂ — less than 80% of stainless steel grades. Typical recycled content is 75%.
Manufacturability6
1.4823-SR's machinability is poor (24/100, worse than 93% of stainless steel grades); weldability poor (28/100); formability not recommended (6/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1.4823-SR
Is 1.4823 easy to machine?
Machine with rigid setups, negative-rake carbide or ceramic inserts, low speed and heavy feed; the interdendritic carbide network is abrasive and work-hardens, so grinding is often preferred for finish surfaces.
Can 1.4823 be welded?
Treat as repair welding only: preheat 200–300 °C, use matching high-Cr or 25-20 (ER310) filler, minimise heat input and slow-cool to avoid cracking; expect reduced ductility in the HAZ.
Can 1.4823 be formed, bent or molded?
Supplied exclusively as sand, shell or investment castings — not cold formable; design generous fillets, uniform wall thickness and adequate risering to avoid hot tears in the high-carbon alloy.
What surface finishes work on 1.4823?
Shot blast or pickle to remove casting scale; surfaces develop a tenacious protective Cr-rich oxide in service, so paint or plating is unnecessary and generally not applied.
1.4823 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 |
|---|---|---|
| Chigh carbon gives the carbide network and creep strength | 0.3 – 0.5 | 0.4 |
| Siboosts scaling resistance; some standards allow up to 2.5 % | 0.5 – 2 | 1.5 |
| Mn | ≤ 1 | 0.7 |
| Pimpurity limit | ≤ 0.04 | — |
| Simpurity limit | ≤ 0.03 | — |
| Crprimary oxidation/sulphidation resistance | 25 – 28 | 27 |
| Nipartial austenite stabiliser, keeps cost low | 3.5 – 5.5 | 4.5 |
| Fe | balance | — |
1.4823-SR — frequently asked
What is 1.4823-SR used for?
1.4823-SR is typically used for furnace grates, heat-treatment fixtures, kiln components and exhaust and combustion system parts. In short: cast heat-resistant to 1050 °C; high-Cr scaling resistance; castings only, low ductility.
What is the yield strength of 1.4823-SR?
1.4823-SR has a typical yield strength of 275 MPa (39.9 ksi) and a tensile strength of 505 MPa (73.2 ksi) — weaker than 77% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is 1.4823-SR easy to machine?
Not especially — machinability is rated poor (24/100, worse than 93% of stainless steel grades). Machine with rigid setups, negative-rake carbide or ceramic inserts, low speed and heavy feed; the interdendritic carbide network is abrasive and work-hardens, so grinding is often preferred for finish surfaces.
Can 1.4823-SR be welded?
Not readily — weldability is rated poor (28/100). Treat as repair welding only: preheat 200–300 °C, use matching high-Cr or 25-20 (ER310) filler, minimise heat input and slow-cool to avoid cracking; expect reduced ductility in the HAZ.
What surface finishes work on 1.4823-SR?
Shot blast or pickle to remove casting scale; surfaces develop a tenacious protective Cr-rich oxide in service, so paint or plating is unnecessary and generally not applied.
Can 1.4823-SR be formed, bent or molded?
Supplied exclusively as sand, shell or investment castings — not cold formable; design generous fillets, uniform wall thickness and adequate risering to avoid hot tears in the high-carbon alloy.
What is the maximum service temperature of 1.4823-SR?
1.4823-SR is rated for continuous use to about 1,050°C (1,922 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4823-AC and 1.4823-A?
AC is the default condition — default supply condition for furnace hardware — heat-resistant castings are normally used as-cast because service temperature exceeds any heat-treatment benefit. A: occasionally specified to homogenise the carbide network and restore some ductility before heavy machining or on castings that saw low-temperature ordering embrittlement. Yield strength is 285 MPa in AC versus 265 MPa in A.
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 — ASTM International (2019)
- GB/T 8492 — Heat-resistant steel and alloy castings for general applications — SAC (2014)
- 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 Corrosion) — ASM International (2005)
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.