Nickel Alloy M30C-F (As fabricated)
Temper · default condition
UNS J24130 · ASTM A494 M30C
Standard supply condition for ASTM A494 M30C pump and valve castings; meets 448/225/25 minimums without heat treatment.
Values for the F condition
Other M30C tempers and conditions
M30C is listed in 4 conditions; see the grade overview at M30C.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Homogenized / solution annealed | Use when maximum ductility, dimensional stability and uniform corrosion behaviour are needed after heavy segregation in thick castings. | 240 | 470 | 36 | 125 HB | 3.3 % IACS |
Stress relieved | Pick after major weld repair or heavy machining of thick sections to lower residual stress and reduce SCC risk in service. | 255 | 490 | 32 | 135 HB | 3.3 % IACS |
As-welded deposit | Condition of upgraded/repaired castings; Nb content gives crack-free deposits but weld metal ductility is below the parent as-cast body. | 265 | 470 | 22 | 150 HB | 3.1 % IACS |
FDefaultThis page As fabricated | Standard supply condition for ASTM A494 M30C pump and valve castings; meets 448/225/25 minimums without heat treatment. | 270 | 500 | 30 | 140 HB | 3.2 % IACS |
What is M30C-F?
M30C-F is M30C in the F temper — standard supply condition for ASTM A494 M30C pump and valve castings; meets 448/225/25 minimums without heat treatment. M30C-F has a yield strength of 270 MPa (39.2 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 84% of nickel alloy grades. Elongation at break is 30% and the elastic modulus is 150 GPa (21.8 Msi). M30C-F has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 81% of nickel alloy grades. It melts at 1,290°C (2,354 °F).
Advantages
- Easy to machine — 35/100, better than 97% of nickel alloy grades
- Conducts heat well — 22 W/m·K (12.7 BTU/hr·ft·°F), better than 91% of nickel alloy grades
- High electrical conductivity — 3.2 % IACS, better than 89% of nickel alloy grades
Limitations
- Low stiffness — 150 GPa (21.8 Msi), worse than 95% of nickel alloy grades
- Low strength — 270 MPa (39.2 ksi), worse than 84% of nickel alloy grades
- Limited service temperature — 480°C (896 °F), worse than 82% of nickel alloy grades
- Limited formability — 15/100, worse than 81% of nickel alloy grades
- Low fracture toughness — 80 MPa·√m (72.8 ksi·√in), worse than 77% of nickel alloy grades
M30C-F properties
Typical room-temperature values for M30C-F; 22 are specific to this condition. Other listed values are M30C reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
M30C-F has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 81% of nickel alloy grades. It melts at 1,290°C (2,354 °F).
Mechanical16
M30C-F has a yield strength of 270 MPa (39.2 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 84% of nickel alloy grades. Elongation at break is 30% and the elastic modulus is 150 GPa (21.8 Msi).
Thermal6
M30C-F is rated for continuous service to 480°C (896 °F). It conducts heat at 22 W/m·K (12.7 BTU/hr·ft·°F), better than 91% of nickel alloy grades. Thermal expansion is 13.9 µm/m·K (7.72 µin/in·°F).
Electrical3
M30C-F conducts electricity at 3.2 % IACS, better than 89% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 51% of nickel alloy grades.
Sustainability4
Producing a kilogram of M30C-F takes about 150 MJ of energy and emits 11.5 kg of CO₂ — less than 68% of nickel alloy grades. Typical recycled content is 40%.
Manufacturability8
M30C-F's machinability is fair (35/100, better than 97% of nickel alloy grades); weldability good (68/100); formability poor (15/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with M30C-F
Is M30C easy to machine?
Machine like Monel 400: rigid setup, positive-rake carbide, low speed (20–35 m/min) with heavy constant feed and flood coolant to avoid work-hardened glazing.
Can M30C be welded?
Readily GTAW/SMAW repaired with ERNiCu-7/ENiCu-7 filler; keep interpass below ~150 °C, clean thoroughly, and avoid sulfur contamination to prevent hot cracking.
Can M30C be formed, bent or molded?
Sand or investment cast only; needs generous risering and chills because of long freezing range — Nb reduces hot tearing versus M35-1.
What surface finishes work on M30C?
Not anodizable; pickle/passivate after welding, then mechanically polish or apply electroless nickel where extra erosion resistance is needed.
M30C 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 |
|---|---|---|
| Cmax per ASTM A494 | ≤ 0.3 | 0.2 |
| Mn | ≤ 1.5 | 1 |
| Si | 1 – 2 | 1.5 |
| NiNi may include Co | 64 – 68 | 66 |
| NbNb+Ta; improves weldability and hot-tear resistance | 1 – 3 | 2 |
| Fe | ≤ 3.5 | 2 |
| S | ≤ 0.03 | — |
| P | ≤ 0.03 | — |
| Cubalance, typically 26–33 % | balance | — |
M30C-F — frequently asked
What is M30C-F used for?
M30C-F is typically used for seawater pump impellers, valve bodies and marine hardware castings. In short: nb-modified for better castability; seawater-grade Ni-Cu casting; lower hot-tearing than M35-1.
What is the yield strength of M30C-F?
M30C-F has a typical yield strength of 270 MPa (39.2 ksi) and a tensile strength of 500 MPa (72.5 ksi) — weaker than 84% of nickel alloy grades. Strength varies by condition: see the 4 listed tempers.
Is M30C-F easy to machine?
Not especially — machinability is rated fair (35/100, better than 97% of nickel alloy grades). Machine like Monel 400: rigid setup, positive-rake carbide, low speed (20–35 m/min) with heavy constant feed and flood coolant to avoid work-hardened glazing.
Can M30C-F be welded?
Yes — weldability is rated good (68/100). Readily GTAW/SMAW repaired with ERNiCu-7/ENiCu-7 filler; keep interpass below ~150 °C, clean thoroughly, and avoid sulfur contamination to prevent hot cracking.
What surface finishes work on M30C-F?
Not anodizable; pickle/passivate after welding, then mechanically polish or apply electroless nickel where extra erosion resistance is needed.
Can M30C-F be formed, bent or molded?
Sand or investment cast only; needs generous risering and chills because of long freezing range — Nb reduces hot tearing versus M35-1.
What is the maximum service temperature of M30C-F?
M30C-F is rated for continuous use to about 480°C (896 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between M30C-F and M30C-HOM?
F is the default condition — standard supply condition for ASTM A494 M30C pump and valve castings; meets 448/225/25 minimums without heat treatment. HOM: use when maximum ductility, dimensional stability and uniform corrosion behaviour are needed after heavy segregation in thick castings. Yield strength is 270 MPa in F versus 240 MPa in HOM.
Sources
- ASTM A494/A494M — Castings, Nickel and Nickel Alloy — ASTM International (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 15 — Casting — ASM International (2008)
- Monel alloy 400 / K-500 technical bulletins (property analogues) — Special Metals Corporation (2020)
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.