alloymap.Ounce Works ↗

Back to AlloyMap

351 SupraCast

351 SupraCast (Alcoa) | Semi-permanent mold casting

Manufacturer-reported values. Do not use as certified design allowables. View sources ↗

TemperWallYield MPaTensile MPaElong. %
T6 · room temperatureNot specified280–350370–4002–3
T6 · 300 °CNot specified557541

T6 at room temperature condition: Manufacturer-reported typical ranges for semi-permanent mold castings. Exact room temperature, wall thickness and sample distribution are not specified; casting process strongly affects achievable properties.

T6 at 300 °C condition: Manufacturer-reported typical single values under the 300 °C header. The source says strengths were measured after 500 hours of exposure at temperature; it does not separately specify an exposure duration for elongation. Exact wall thickness and sample distribution are not reported.

Chemical composition

Reported weight-percent bounds. A blank lower bound means only an upper threshold was reported.

The 351 SupraCast table gives wt.% ranges and inclusive maxima (single values). It is distinct from the HPDC C667F/C677F section below it; that second grade is not published because its heading and row disagree.

Element / source labelMinimum wt%Upper wt%
Si8.010.0
Fe—0.2
Cu1.32.1
Mn0.080.6
Mg0.250.55
V0.080.3
Zr0.080.3
Ti—0.2
Others Each—0.05
Others Total—0.15

Physical and thermal properties

PropertyReported valueUnitCondition
density2.7g/cm³typical; temperature not reported
young modulus72–74GPatypical; temperature not reported
thermal conductivity140–160W/(m·K)typical; temperature not reported
electrical conductivity32–36%IACStypical; temperature not reported
solidification range510–595°Ctypical; source prints 595–510 °C

Fatigue

Source-reported fatigue values; conditions must be compared before use.

PropertyValueStress ratioCyclesCondition
Fatigue Strength95 MPa-110,000,000T6; 150 °C test; 351-T6; typical semi-permanent mold casting; fatigue exposure duration and wall thickness not reported.
Fatigue Strength79 MPa-110,000,000T6; 250 °C test; 351-T6; typical semi-permanent mold casting; fatigue exposure duration and wall thickness not reported.

Processing properties

Source-reported comparisons, not certified limits.

PropertyReported value
castabilityVery good; suitable for sand, investment and permanent mold casting
machinabilityVery good
weldabilityGood
corrosion resistanceASTM G110: similar to A359; Alcoa states Cu additions do not change corrosion mode or depth of attack

Evidence

Alcoa Specialty Alloys: 351 SupraCast Technical Data — Alcoa Corporation

Show the exact source location for each value

Current official product page