Steel A182 F1
ASTM A182 F1 · UNS K12822
A carbon-molybdenum low-alloy forging steel used for flanges and fittings in moderate-temperature pressure service where slightly better elevated-temperature strength than plain carbon steel is needed.
Reference datasheet — A182 F1 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
A182 F1 tempers and conditions
A182 F1 is supplied in 4 conditions, soft to hard. N+T 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 |
|---|---|---|---|---|---|---|
Solution annealed | Choose when maximum softness, machinability and dimensional stability are wanted; lowest strength within the spec minimums. | 300 | 500 | 31 | 148 HB | 8.4 % IACS |
N+TDefault Normalized and tempered | Standard supply condition for F1 flanges and fittings; best combination of strength, toughness and elevated-temperature stability. | 330 | 530 | 28 | 160 HB | — |
prior to final heat treatment (semi-finished forgings only) | Intermediate condition supplied for further machining and mandatory heat treatment; not acceptable for A182 code certification as-is. | 340 | 560 | 24 | 175 HB | 8.2 % IACS |
Quenched and tempered | Used for heavy-section forgings where uniform properties and higher low-temperature toughness are required. | 380 | 570 | 26 | 175 HB | 8 % IACS |
What is A182 F1?
A carbon-molybdenum low-alloy forging steel used for flanges and fittings in moderate-temperature pressure service where slightly better elevated-temperature strength than plain carbon steel is needed. A182 F1 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,460°C (2,660 °F). A182 F1 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 78% of steel grades. Elongation at break is 28% and the elastic modulus is 205 GPa (29.7 Msi).
What is A182 F1 used for?
- Flanges
- Fittings
- Valve bodies
- Piping components for power plants
Advantages
- High service temperature — 510°C (950 °F), better than 92% of steel grades
- Ductile — tolerates forming and impact — 28%, better than 89% of steel grades
Limitations
- Low strength — 330 MPa (47.9 ksi), worse than 78% of steel grades
A182 F1 properties
Typical room-temperature values for A182 F1-N+T; bars are the position among steel grades.
Physical3
A182 F1 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,460°C (2,660 °F).
Mechanical16
A182 F1 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 78% of steel grades. Elongation at break is 28% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
A182 F1 is rated for continuous service to 510°C (950 °F). It conducts heat at 43 W/m·K (24.8 BTU/hr·ft·°F), better than 51% of steel grades. Thermal expansion is 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
A182 F1 conducts electricity at 8.2 % IACS, better than 61% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of A182 F1 takes about 30 MJ of energy and emits 2.2 kg of CO₂ — more than 56% of steel grades. Typical recycled content is 25%.
Manufacturability7
A182 F1's machinability is good (58/100, better than 75% of steel grades); weldability good (65/100); formability good (55/100).
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 steel family
Yield strength against density for every steel grade FabDigit runs. A182 F1 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with A182 F1
Is A182 F1 easy to machine?
Machines like a medium-carbon steel at ~60% of 1212; use rigid setups, sharp carbide inserts and adequate coolant to avoid built-up edge on the softer annealed condition.
Can A182 F1 be welded?
Readily welded with matched E/ER 80S-D2 or E7018-A1 consumables; preheat 100–200 °C and PWHT at 620–700 °C are normally required for pressure service.
Can A182 F1 be formed, bent or molded?
Primarily hot-forged at 1100–1230 °C with finish above ~900 °C; cold forming is limited by moderate ductility and strain-aging sensitivity.
A182 F1 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 |
|---|---|---|
| C0.28 max | ≤ 0.28 | 0.22 |
| Mn | 0.6 – 0.9 | 0.75 |
| Si | 0.15 – 0.35 | 0.25 |
| Mocarbon-molybdenum strengthening | 0.44 – 0.65 | 0.52 |
| P0.045 max | ≤ 0.05 | 0.02 |
| S0.045 max | ≤ 0.05 | 0.02 |
| Fe | balance | — |
What surface finishes work on A182 F1?
No anodizing; protect with shop primer, epoxy paint, hot-dip galvanizing, metallizing or electroless nickel — plain surfaces rust rapidly.
Surface treatments FabDigit runs on 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).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel A182 F1 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- K12822
- ASTM
- A335 P1
How much does A182 F1 cost?
A182 F1 is a standard-cost 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.
A182 F1 — frequently asked
What is A182 F1 used for?
A182 F1 is typically used for flanges, fittings, valve bodies and piping components for power plants. In short: entry-level C-Mo pressure forging; better creep than carbon steel; preheat and PWHT required.
What is the yield strength of A182 F1?
A182 F1 has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 78% of steel grades. Strength varies by condition: see the 4 listed tempers.
Is A182 F1 easy to machine?
Reasonably — machinability is rated good (58/100, better than 75% of steel grades). Machines like a medium-carbon steel at ~60% of 1212; use rigid setups, sharp carbide inserts and adequate coolant to avoid built-up edge on the softer annealed condition.
Can A182 F1 be welded?
Yes — weldability is rated good (65/100). Readily welded with matched E/ER 80S-D2 or E7018-A1 consumables; preheat 100–200 °C and PWHT at 620–700 °C are normally required for pressure service.
What surface finishes work on A182 F1?
No anodizing; protect with shop primer, epoxy paint, hot-dip galvanizing, metallizing or electroless nickel — plain surfaces rust rapidly.
Can A182 F1 be formed, bent or molded?
Primarily hot-forged at 1100–1230 °C with finish above ~900 °C; cold forming is limited by moderate ductility and strain-aging sensitivity.
What is the maximum service temperature of A182 F1?
A182 F1 is rated for continuous use to about 510°C (950 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between A182 F1 N+T and A182 F1-A?
N+T is the default condition — standard supply condition for F1 flanges and fittings; best combination of strength, toughness and elevated-temperature stability. A: choose when maximum softness, machinability and dimensional stability are wanted; lowest strength within the spec minimums. Yield strength is 330 MPa in N+T versus 300 MPa in A.
How much does A182 F1 cost?
A182 F1 is a standard-cost 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
- ASTM A182/A182M — Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Fittings, Valves and Parts for High-Temperature Service — ASTM International (2023)
- ASTM A335/A335M — Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service (Grade P1) — ASTM International (2022)
- ASME BPVC Section II Part D — Properties (Metric) — ASME (2023)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- API RP 941 — Steels for Hydrogen Service / graphitization guidance — API (2016)
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.