Steel A352 Grade LC1
ASTM A352 Grade LC1 · UNS J12522
ASTM A352 Grade LC1 (UNS J12522) is a carbon-1/2Mo steel casting from the A352 low-temperature pressure-casting family, intended for pressure-containing parts down to about −46 °C (−50 °F).
Reference datasheet — A352 Grade LC1 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
A352 Grade LC1 tempers and conditions
A352 Grade LC1 is supplied in 2 conditions, soft to hard. N+T is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
N+TDefault Normalized and tempered | Standard supply condition for A352 LC1 pressure castings; best balance of low-temperature toughness, weldability and cost. | 285 | 500 | 28 | 150 HB | — |
Quenched and tempered | Choose when heavier sections need uniform properties and higher, more reliable −59 °C impact energy; slightly higher strength and hardness. | 330 | 540 | 27 | 165 HB | — |
What is A352 Grade LC1?
ASTM A352 Grade LC1 (UNS J12522) is a carbon-1/2Mo steel casting from the A352 low-temperature pressure-casting family, intended for pressure-containing parts down to about −46 °C (−50 °F). Default properties are 285 MPa yield, 500 MPa tensile, 28 % elongation and 150 HB, with service to 450 °C and a weldability rating of 72; conditions on file are N+T and Q+T. It is a plain low-alloy steel with no corrosion resistance and rusts quickly if left bare, and weld repairs need 595–650 °C PWHT to restore −59 °C toughness. Nickel-bearing LC-series grades are the step down in temperature. A352 Grade LC1 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F). A352 Grade LC1 has a yield strength of 285 MPa (41.3 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 89% of steel grades. Elongation at break is 28% and the elastic modulus is 200 GPa (29 Msi).
What is A352 Grade LC1 used for?
- valve bodies
- pump casings
- low-temperature piping fittings
Advantages
- Ductile — tolerates forming and impact — 28%, better than 89% of steel grades
- High service temperature — 450°C (842 °F), better than 86% of steel grades
- Readily welded — 72/100, better than 75% of steel grades
Limitations
- Low strength — 285 MPa (41.3 ksi), worse than 89% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
A352 Grade LC1 properties
Typical room-temperature values for A352 Grade LC1-N+T; bars are the position among steel grades.
Physical3
A352 Grade LC1 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F).
Mechanical16
A352 Grade LC1 has a yield strength of 285 MPa (41.3 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 89% of steel grades. Elongation at break is 28% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
A352 Grade LC1 is rated for continuous service to 450°C (842 °F). It conducts heat at 42 W/m·K (24.3 BTU/hr·ft·°F), worse than 56% of steel grades. Thermal expansion is 12.2 µm/m·K (6.78 µin/in·°F).
Electrical3
A352 Grade LC1 conducts electricity at 8.6 % IACS, better than 66% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of A352 Grade LC1 takes about 30 MJ of energy and emits 2.1 kg of CO₂ — more than 56% of steel grades. Typical recycled content is 85%.
Manufacturability7
A352 Grade LC1's machinability is good (55/100, better than 62% of steel grades); weldability very good (72/100).
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. A352 Grade LC1 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with A352 Grade LC1
Is A352 Grade LC1 easy to machine?
Machines like normalized low-alloy carbon steel at ~60% of AISI 1212; use rigid setups and watch for hard spots or sand inclusions at the as-cast skin.
Can A352 Grade LC1 be welded?
Readily weldable with matching C-Mo (E/ER80S-D2, E7018-A1) consumables; preheat 95–150 °C for heavy sections and PWHT at 595–650 °C to restore −59 °C toughness after weld repair.
Can A352 Grade LC1 be formed, bent or molded?
Sand-cast grade with good fluidity and moderate shrinkage; risers and directional solidification needed to keep radiographic soundness in valve-body sections.
A352 Grade LC1 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 | ≤ 0.25 | 0.2 |
| Mn | 0.5 – 0.8 | 0.65 |
| Si | ≤ 0.6 | 0.4 |
| Mo | 0.45 – 0.65 | 0.55 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.05 | 0.02 |
| Curesidual element limit | ≤ 0.5 | — |
| Niresidual element limit | ≤ 0.5 | — |
| Crresidual element limit | ≤ 0.5 | — |
| Wresidual element limit | ≤ 0.1 | — |
| Vresidual element limit; total residuals 1.00 max | ≤ 0.03 | — |
| Fe | balance | — |
What surface finishes work on A352 Grade LC1?
No anodizing; shot blast then epoxy/zinc-rich paint, or electroless nickel/phosphate for corrosion protection—surface rusts quickly if left bare.
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 A352 Grade LC1 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- J12522
How much does A352 Grade LC1 cost?
A352 Grade LC1 is a standard-cost steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
A352 Grade LC1 — frequently asked
What is A352 Grade LC1 used for?
A352 Grade LC1 is typically used for valve bodies, pump casings and low-temperature piping fittings. In short: low-temperature pressure casting; good weldability, rating 72; toughness to −46 °C (−50 °F).
What is the yield strength of A352 Grade LC1?
A352 Grade LC1 has a typical yield strength of 285 MPa (41.3 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 89% of steel grades. Strength varies by condition: see the 2 listed tempers.
Is A352 Grade LC1 easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Machines like normalized low-alloy carbon steel at ~60% of AISI 1212; use rigid setups and watch for hard spots or sand inclusions at the as-cast skin.
Can A352 Grade LC1 be welded?
Yes — weldability is rated very good (72/100). Readily weldable with matching C-Mo (E/ER80S-D2, E7018-A1) consumables; preheat 95–150 °C for heavy sections and PWHT at 595–650 °C to restore −59 °C toughness after weld repair.
What surface finishes work on A352 Grade LC1?
No anodizing; shot blast then epoxy/zinc-rich paint, or electroless nickel/phosphate for corrosion protection—surface rusts quickly if left bare.
Can A352 Grade LC1 be formed, bent or molded?
Sand-cast grade with good fluidity and moderate shrinkage; risers and directional solidification needed to keep radiographic soundness in valve-body sections.
What is the maximum service temperature of A352 Grade LC1?
A352 Grade LC1 is rated for continuous use to about 450°C (842 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does A352 Grade LC1 cost?
A352 Grade LC1 is a standard-cost steel ($$), 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 A352/A352M — Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service — ASTM International (2023)
- ASME BPVC Section II Part D — Properties (Metric) — ASME (2023)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys (Steel Castings) — ASM International (1990)
- Steel Castings Handbook, 6th ed. — Steel Founders' Society of America / ASM (1995)
- ASME B16.34 — Valves: Flanged, Threaded and Welding End (low-temperature material ratings) — ASME (2020)
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.