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Thermodur-73

Thermodur-73 (RHEINFELDEN ALLOYS) | High-pressure die casting

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

No complete reviewed mechanical condition. Separately reviewed property observations appear below.

Chemical composition

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

Element / source labelMinimum wt%Upper wt%
Si10.011.8
Fe—0.15
Cu1.82.3
Mg1.82.3
Zn—0.1
Ti—0.1
Ni1.82.3

Original-supplier Thermodur-73 only. The 2015/2016 and 2018 supplier editions disagree on the maximum Mn content (0.4 versus 0.8 wt%); neither is presented as a current unqualified specification. The 2016 detailed and summary tables leave the 20 °C ageing-time cell blank, while the current supplier HTML says 500 h, so the complete 20 °C mechanical condition is held. At 150 °C and 225 °C the 500 h strengths and elongations are individual qualified observations; no temper or wall thickness is inferred. The 2018 foldout differs in chemical denomination spelling, so the listing uses the brand rather than asserting a universal equivalent designation. All cited supplier editions count as one issuer.

Physical and thermal properties

PropertyReported valueUnitCondition
density2.74kg/dm³2016 supplier physical table; density is approximate; measurement temperature and state not reported
youngs modulus85–90GPa2016 supplier physical table; density is approximate; measurement temperature and state not reported
linear shrinkage1.0–1.1%Sand casting; 2016 original-supplier physical summary
linear shrinkage0.7–1.0%Gravity die casting; 2016 original-supplier physical summary
linear shrinkage0.4–0.6%High-pressure die casting; 2016 original-supplier physical summary
thermal expansion2110⁻⁶/K20–200 °C; 2018 original-supplier foldout physical summary; material treatment state not specified for this row

Processing properties

Source-reported comparisons, not certified limits.

PropertyReported value
casting routeheat-resistant die cast alloy

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
yield strength280–310 MPaHigh-pressure die casting; ageing 150 °C for 500 h; tested at the indicated temperature; wall thickness and treatment state not reported
ultimate tensile strength330–355 MPaHigh-pressure die casting; ageing 150 °C for 500 h; tested at the indicated temperature; wall thickness and treatment state not reported
elongation< 1 %High-pressure die casting; ageing 150 °C for 500 h; tested at the indicated temperature; wall thickness and treatment state not reported
yield strength130–155 MPaHigh-pressure die casting; ageing 225 °C for 500 h; tested at the indicated temperature; wall thickness and treatment state not reported
ultimate tensile strength250–280 MPaHigh-pressure die casting; ageing 225 °C for 500 h; tested at the indicated temperature; wall thickness and treatment state not reported
elongation1–2 %High-pressure die casting; ageing 225 °C for 500 h; tested at the indicated temperature; wall thickness and treatment state not reported

Data under review

Composition Mn withheld: The original supplier changed the Mn maximum from 0.4 wt% in the 2015/2016 editions to 0.8 wt% in the 2018 foldout. No current limit is asserted.

Thermodur-73 original-supplier primary ↗ — PDF p. 65, Thermodur-73 composition_Mn edition conflict

Thermodur-73 original-supplier foldout ↗ — PDF p. 8, Thermodur-73 composition_Mn edition conflict

Evidence

Thermodur-73 original-supplier die — RHEINFELDEN ALLOYS GmbH & Co. KG

Thermodur-73 original-supplier foldout — RHEINFELDEN ALLOYS GmbH & Co. KG

Thermodur-73 original-supplier primary — RHEINFELDEN ALLOYS GmbH & Co. KG

Show the exact source location for each value

Official issuer page