Designation
| Name |
The value |
| Designation GOST Cyrillic |
МЛ4 |
| Designation GOST Latin |
ML4 |
| Transliteration |
ML4 |
| By chemical elements |
CuЛ4 |
Description
ML4 casting alloy and process selection
ML4 is described in legacy material data as an Mg-Al-Zn magnesium-aluminum-zinc casting alloy. Casting behavior, corrosion response and mechanical properties depend on chemistry, melt practice, casting method, section size and heat treatment. The grade name alone does not guarantee a finished-part property or suitability for an operating environment.
Information required for a casting enquiry
Provide the governing standard, part drawing, casting method, nominal and finished dimensions, machining allowance, quantity and target delivery condition. State heat treatment, tensile or hardness requirements, radiographic, penetrant or other inspection, repair restrictions, corrosion protection, marking and certificate needs. Include service temperature, loading and environment where they affect material or process selection. Evek LLC confirms the feasible production route only after reviewing the complete requirement.
Published applications and processing notes are reference information only. The specified drawing, process, heat treatment and lot certificate control acceptance.
Information needed for a quote
Send ML4, the governing standard, casting drawing and method, dimensions, heat treatment, quantity, testing, protection, certificate needs and U.S. delivery ZIP code.
Stock, production route, origin, minimum quantity, compliance, certification, price and final delivery are confirmed during quotation. Product descriptions and reference data are not stock or suitability guarantees.
Related products and contact
Request a U.S. quote
Evek LLC serves buyers throughout the United States. Typical delivery is 2–3 weeks, subject to the exact material, specification, dimensions, quantity and availability. Send your requirement to Evek LLC with the U.S. delivery ZIP code.
Standards
| Name |
Code |
Standards |
| Non-ferrous metals, including rare, and their alloys |
В51 |
GOST 2856-79 |
| Thermal and thermochemical treatment of metals |
В04 |
OST 1 90121-90 |
| Castings, non-ferrous metals and alloys |
В84 |
OST 1 90248-77 |
Chemical composition
| Standard |
Mn |
Si |
Ni |
Fe |
Cu |
Al |
Zn |
Zr |
Mg |
Be |
| GOST 2856-79 |
0.15-0.5 |
≤0.25 |
≤0.01 |
≤0.06 |
≤0.1 |
5-7 |
2-3.5 |
≤0.002 |
Rest |
≤0.002 |
Mg is the basis.
According to GOST 2856-79, the content of other impurities is ≤ 0.10%, the sum of the impurities to be determined is 0.50%. With a simultaneous content of beryllium and zirconium, the mass fraction of beryllium should not exceed 0.0015%.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
| Casting in sand molds, shell molds and in the mold without heat treatment according to GOST 2856-79 |
|
≥80 |
≥160 |
≥3 |
| Casting in sand mold, shell mold and shell mold according to GOST 2856-79. Mode T4: Homogenization + annealing in air |
|
≥80 |
≥220 |
≥5 |
| Casting in sand mold, shell mold and shell mold according to GOST 2856-79. T6 mode: Homogenization + annealing at air + aging |
|
≥100 |
≥225 |
≥2 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
Physical characteristics
| Temperature |
Е, HPa |
r, kg/m3 |
l, W/(m · °C) |
С, J/(kg · °C) |
| 20 |
43 |
1830 |
795 |
10467 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
Technological properties
| Name |
The value |
| Features of heat treatment |
According to OST 1 90121-90 casting in the ground and the shell molds following the recommended modes of heat treatment: T2 (to reduce internal stresses) - Annealing at 350±5 °C (delay 2-3 hours), air cooling. For a significant increase in mechanical properties of the alloy (σв, δ, EA), heat treatment is performed on taimu T4 Annealing in air of 380±5 °C (extract 8-16 h). Due to the low rate of diffusion processes as the cooling medium is usually a calm air. To improve the mechanical properties of the cooled castings may be conducted by blowing of air. To improve the mechanical properties (σв, σ0,2) applied heat treatment by mode T6 - Tempering air with 380±5 °C (extract 8-16 h) and Aging at 175±5 °C (delay of 12-16 h), air cooling. In this case the plastic properties decrease. A noticeable increase in the values of σв, σ0,2 is achieved in the hardening of the casting by blowing air. |
