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Alufont-52

Alufont-52 / AlCu4Ti / EN 21100 (RHEINFELDEN ALLOYS) | Sand and gravity die casting

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

TemperWallYield MPaTensile MPaElong. %
T64 · Sand castingNot specified210–240300–3608–15
T6 · Sand castingNot specified300–420400–4753–4
T64 · Gravity die castingNot specified210–250360–40012–20
T6 · Gravity die castingNot specified310–400420–4757–16

T64 condition: Original supplier in-house performance interval; separately cast and casting-extracted specimens are included (p. 75). No wall thickness is stated for these ranges. Parenthetical values are separate casting minima at wall thickness ≤20 mm.

T6 condition: Original supplier in-house performance interval; separately cast and casting-extracted specimens are included (p. 75). No wall thickness is stated for these ranges. Parenthetical values are separate casting minima at wall thickness ≤20 mm.

T64 condition: Original supplier in-house performance interval; separately cast and casting-extracted specimens are included (p. 75). No wall thickness is stated for these ranges. Parenthetical values are separate casting minima at wall thickness ≤20 mm.

T6 condition: Original supplier in-house performance interval; separately cast and casting-extracted specimens are included (p. 75). No wall thickness is stated for these ranges. Parenthetical values are separate casting minima at wall thickness ≤20 mm.

Chemical composition

Only reviewed weight-percent bounds are listed. A blank bound means only the other threshold was reported.

Original branded supplier handbook p. 60 gives Alufont-52 / AlCu4Ti / 21 100. Detailed and summary tables are one PDF and one issuer. Ingot composition on pp. 76–77 uses mass %; single numbers are upper maxima, not composition midpoints. The performance ranges on pp. 60 and 79 do not specify wall thickness. Bracketed values are separate casting minima for wall ≤20 mm (p. 75). Fatigue summary ranges lack cycle count and stress ratio. P. 74 process-sheet wall classes and p. 101 general T6/T64 heat-treatment rows are retained separately; an exactly 8 mm wall is not assigned to a p. 74 class.

Element / source labelMinimum wt%Upper wt%
Si—0.15
Fe—0.15
Cu4.25.2
Mn0.010.5
Mg—0.03
Zn—0.07
Ti0.150.25

Physical and thermal properties

PropertyReported valueUnitCondition
density2.75kg/dm³Supplier physical summary; heat-treatable alloy in heat-treated state; test temperature not separately reported
youngs modulus65–73GPaSupplier physical summary; heat-treatable alloy in heat-treated state; test temperature not separately reported
thermal expansion2310⁻⁶/KSupplier physical summary; heat-treatable alloy in heat-treated state; 20–200 °C
thermal conductivity1.3W/(K·cm)Supplier physical summary; heat-treatable alloy in heat-treated state; 20–200 °C
electrical conductivity17–23MS/mSupplier physical summary; heat-treatable alloy in heat-treated state; temperature not separately reported
electrical conductivity29.5–39.5%IACSSupplier physical summary; heat-treatable alloy in heat-treated state; temperature not separately reported
linear shrinkage1.3–1.5%Supplier physical summary; heat-treatable alloy in heat-treated state; sand casting; temperature not separately reported
linear shrinkage0.8–1.2%Supplier physical summary; heat-treatable alloy in heat-treated state; gravity die casting; temperature not separately reported
melt solidification range540–650°CSupplier melt and solidification range; includes partial-melting onset from segregation in the cast structure

Processing properties

Source-reported comparisons, not certified limits.

PropertyReported value
post melting temperature limitAfter melting down: temperature maximum 800 °C; supplier instructs temperature check.
rotor refiningQuick-running gas rotor: argon or nitrogen 7–10 L/min for 6–10 min.
nitrogen tablet refiningGas-flushing tablet: 150–350 L nitrogen per kg tablet; bell-plunger procedure.
grain refinementTiB2-based grain refiner: 0.15–0.30 wt% tableted flux or 0.1–0.2 wt% master-alloy wire, relative to charge weight.
sand pouring temperatureApproximate pouring temperature for sand casting: 720–760 °C; depends on design, size and wall thickness.
gravity pouring temperatureApproximate pouring temperature for gravity die casting: 730–780 °C; depends on design, size and wall thickness.
gravity die temperatureGravity die temperature: 300–450 °C.
solution thin wallProcessing-sheet solution treatment for wall <8 mm: do not heat too quickly to 525–535 °C; hold 8–10 h, then quench in 20–50 °C water. Heating-up time excluded.
solution thick wallProcessing-sheet solution treatment for wall >8 mm: slowly heat to 520–530 °C; hold 12–18 h, then quench in 20–50 °C water. Heating-up time excluded; >20 mm has a separate stepped guidance.
solution very thick steppedProcessing-sheet stepped treatment for wall >20 mm: slowly heat to 490 °C for 4–6 h, then 520 °C for 8–12 h; quench in 20–50 °C water.
artificial full ageingProcessing-sheet artificial/full ageing: 170 ± 5 °C for 6–7 h; not silently equated to every T6 specimen.
partial ageingProcessing-sheet partial ageing: 140 ± 5 °C for 6–7 h; not silently equated to every T64 specimen.
T6 general heat treatmentGeneral heat-treatment summary: solution 525–535 °C for 8–16 h; quench water 20–50 °C; artificial ageing 160–175 °C for 6–7 h. The wall-specific process sheet on p. 74 is separate.
T64 general heat treatmentGeneral heat-treatment summary: solution 525–535 °C for 8–10 h; quench water 20–50 °C; partial ageing 135–145 °C for 6–7 h. The wall-specific process sheet on p. 74 is separate.

Additional property data

Source-reported values, specification intervals, minimums and strict bounds; an average is labeled only when the source reports it. Compare conditions before use.

PropertyValueCondition
brinell hardness90–100 HBWSand casting; T64; supplier performance range; wall thickness not reported
fatigue resistance80–100 MPaSand casting; T64; supplier summary range; fatigue cycle count and stress ratio not reported
yield strength≥ 180 MPaSand casting; T64; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
ultimate tensile strength≥ 260 MPaSand casting; T64; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
elongation≥ 4 %Sand casting; T64; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
brinell hardness≥ 90 HBWSand casting; T64; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
brinell hardness125–145 HBWSand casting; T6; supplier performance range; wall thickness not reported
fatigue resistance80–100 MPaSand casting; T6; supplier summary range; fatigue cycle count and stress ratio not reported
yield strength≥ 280 MPaSand casting; T6; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
ultimate tensile strength≥ 350 MPaSand casting; T6; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
elongation≥ 2 %Sand casting; T6; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
brinell hardness≥ 120 HBWSand casting; T6; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
brinell hardness90–120 HBWGravity die casting; T64; supplier performance range; wall thickness not reported
fatigue resistance100–110 MPaGravity die casting; T64; supplier summary range; fatigue cycle count and stress ratio not reported
yield strength≥ 190 MPaGravity die casting; T64; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
ultimate tensile strength≥ 300 MPaGravity die casting; T64; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
elongation≥ 10 %Gravity die casting; T64; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
brinell hardness≥ 90 HBWGravity die casting; T64; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
brinell hardness130–145 HBWGravity die casting; T6; supplier performance range; wall thickness not reported
fatigue resistance100–110 MPaGravity die casting; T6; supplier summary range; fatigue cycle count and stress ratio not reported
yield strength≥ 300 MPaGravity die casting; T6; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
ultimate tensile strength≥ 400 MPaGravity die casting; T6; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
elongation≥ 4 %Gravity die casting; T6; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)
brinell hardness≥ 130 HBWGravity die casting; T6; supplier casting minimum at wall thickness ≤20 mm (handbook p. 75)

Evidence

Primary Aluminium Casting Alloys handbook, 2016 — Alufont-52 — RHEINFELDEN ALLOYS GmbH & Co. KG

Show the exact source location for each value

Official issuer page