Alloy Ak5mch (АЛ5-1)

Designation

Name	The value
Designation GOST Cyrillic	АК5Мч
Designation GOST Latin	AK5Mch
Transliteration	AK5Mch
By chemical elements	-

Name	The value
Designation GOST Cyrillic	АЛ5-1
Designation GOST Latin	AL5-1
Transliteration	AL5-1
By chemical elements	-

Description

Alloy Ak5mch used: for the manufacture of ingots and shaped castings by various casting methods (sand casting, investment casting, gravity die casting, pressure casting).

Note

Aluminum foundry alloy of the system Al-Si-Cu. Alloy high-strength heat-resistant.

Standards

Name	Code	Standards
Non-ferrous metals, including rare, and their alloys	В51	GOST 1583-93
Castings, non-ferrous metals and alloys	В84	OST 1 80029-83, OST 1 90180-75

Chemical composition

Standard	Mn	Si	Fe	Cu	Al	B	Ti	Zn	Sn	Zr	Mg
OST 1 90180-75	≤0.1	4.5-5.5	≤0.3	-	Rest	≤0.1	0.08-0.15	≤0.3	≤0.01	≤0.2	0.4-0.55
GOST 1583-93	≤0.1	4.5-5.5	≤0.3	1-1.5	Rest	≤0.1	0.08-0.15	≤0.3	≤0.01	≤0.15	0.4-0.55

Al is the base.
According to GOST 1583-93, the iron content is specified for casting in sand molds and for investment models. The iron content for casting in the mold is ≤ 0.40%, with die casting ≤ 0.50%. The amount of allowable impurities should be for casting in sand molds and for investment models ≤ 0.60%, casting in chill molds ≤ 0.70%, injection molding ≤ 0.80%.
According to OST 1 90180-75, the amount of impurities to be accounted for should be for casting in sand molds, for melted models, casting into chill molds, casting into shell molds should be ≤ 0.60%.

Mechanical properties

σ_U, MPa	d	HB, MPa
Casting (in land, investment casting, gravity die casting). Mode T1: Artificial aging without prior tempering at 175-185 °C (extract 5-10 h)
≥176	≥1	≥65
Castings of high strength. Mode T5: Quenching in water from 520-530 °C (exposure 2-12 h) + incomplete artificial aging at 170-180 °C (extract 3-10 h)
≥245	≥1.5	-
≥314	≥2.5	-
≥226	≥1	-
≥255	≥1.5	-
≥206	≥0.5	-
≥221	≥1	-
Casting, including alloy, modified (m). Mode T5: Quenching in water from 520-530 °C (extract 3-10 h) + incomplete artificial aging at 170-180 °C (extract 5-10 h)
≥274	≥1	≥70
≥294	≥1.5	≥70
Casting. Mode T7: Quenching in water from 520-530 °C (extract 3-10 h) + stabilizing vacation at 220-240 °C (aging for 3-5 hours)
≥206	≥1.5	≥65

Description mechanical marks

Name	Description
σ_U	Limit short-term strength
d	Elongation after rupture
HB	Brinell hardness number

Physical characteristics

Temperature	Е, HPa	r, kg/m³	R, Mr. · m
20	70	2680	462

A description of the physical symbols

Name	Description
l	Coefficient of thermal conductivity
С	Specific heat