Aluminum Alloy Die Casting Standard---China Standard GB/T 15115-94
Chemical composition and mechanical properties of die-cast aluminum alloys
No.
The winning combination
Alloy code
chemical composition
Mechanical properties
(not lower than)
silicon
copper
manganese
magnesium
iron
nickel
titanium
Zinc
lead
tin
aluminum
tensile strength
Elongation
Brinell hardness HB5
/250
/30
1
YZA1Sil2
YL102
10.0
13.0
≤0.6
≤0.6
≤ 0.05
≤1.2
≤ 0.3
Yu
220
2
60
2
YZA1Si10Mg
YL104
8.0
10.5
≤ 0.3
0.2
0.5
0.17
0.30
≤1.0
≤ 0.3
≤ 0.05
≤0.01
Yu
220
2
70
3
YZA1Si12Cu2
YL108
11.0
13.0
1.0
2.0
0.3
0.9
0.4
1.0
≤1.0
≤ 0.05
≤1.0
≤ 0.05
≤0.01
Yu
240
1
90
4
YZA1Si9Cu4
YL112
7.5
9.5
3.0
4.0
≤ 0.5
≤ 0.3
≤1.2
≤ 0.5
≤1.2
≤0.1
≤0.1
Yu
240
1
85
5
YZA1Si11Cu3
YL113
9.6
12.0
1.5
3.5
≤ 0.5
≤ 0.3
≤1.2
≤ 0.5
≤1.0
≤0.1
≤0.1
Yu
230
1
80
6
YZA1Si17Cu5Mg
YL117
16.0
18.0
4.0
5.0
≤ 0.5
0.45
0.65
≤1.2
≤0.1
≤0.1
≤1.2
Yu
220
<1
7
YZA1Mg5Sil
YL302
0.8
1.3
≤0.1
0.1
0.4
4.5
5.5
≤1.2
≤ 0.2
≤ 0.2
Yu
220
2
70
2. Aluminum alloy die casting GB/T 15114-94
1. Topic content and scope of application
This standard specifies the technical requirements, quality assurance, test methods, inspection rules and delivery conditions of aluminum alloy die castings.
This standard applies to aluminum alloy die castings.
2. Reference standards
GB1182 Shape and Position Tolerance Codes and Standards
GB2828 Batch Inspection Count Sampling Procedure and Sampling Table (Applicable to Continuous Inspection)
GB2829 Periodic Inspection Count Sampling Procedure and Sampling Table (Applicable to Inspection of Stability of Production Process)
GB6060.1 Surface roughness comparison specimen casting surface
GB6060.4 Surface roughness comparison sample polishing surface
GB6060.5 Surface roughness comparison specimen throw (spray) pellets, sandblasted surface
GB6414 casting size tolerance
GB/T11350 casting machining allowance
GB/T15115 Die Cast Aluminum Alloy
3. Technical requirements
3.1 Chemical composition
The chemical composition of the alloy should meet the requirements of GB/T15115.
3.2 Mechanical properties
3.2.1 When using die-casting test specimens, its mechanical properties shall comply with the provisions of GB/T15115
3.2.2 When the die casting body test is used, the mechanical properties of the cut-out sample at the designated site shall not be lower than 75% of the single-cast sample. If there are special requirements, it may be agreed upon by both parties.
3.3 die casting size
3.3.1 The geometry and dimensions of the die castings shall comply with the provisions of the casting drawings
3.3.2 The dimensional tolerances of die castings shall be in accordance with the provisions of GB6414. When there are special provisions and requirements, they shall be indicated on the drawings.
3.3.3 When the die casting position tolerance requirements, the labeling method according to the provisions of GB1182.
3.3.4 The dimensional tolerances of die castings do not include cast angles, and their non-processed surfaces: the envelope surface is based on the small end, and when specified and required, special instructions and requirements must be specified on the drawings.
3.4 When the die castings need to be machined, their allowance is to be specified in GB/T 11350. If there are special provisions and requirements, the amount of work required must be specified on the drawings.
3.5 Surface quality
3.5.1 casting surface roughness should meet the requirements of GB 6060.1
3.5.2 Castings are not allowed to crack, undercast, loose, air bubbles and any penetrating defects.
3.5.3 castings are not allowed to have scratches, depressions, lack of meat and mesh burrs and other waist triangle defects, but the extent and quantity of its defects should be consistent with the standards agreed by both parties.
3.5.4 Castings, flashes, overflows, partitions, and ejector marks areosceles triangles should be cleaned, but traces are allowed.
3.5.5 If there is no special regulation on the drawing, the setting of the die casting process, such as the position of the ejector pin, the position of the parting line, the position of the gate and the overflow port, shall be stipulated by the manufacturer; otherwise, the design shall be marked or Supply and demand sides agreed.
3.5.6 Die castings require specially machined surfaces, such as polishing, shot peening, chrome plating, coating, anodizing, chemical oxidation, etc. shall be indicated on the drawing or agreed upon by both parties.
3.6 Internal quality
3.6.1 If the die casting can meet the requirements of its use, the essential defects of the die casting shall not be used as the basis for scrapping.
3.6.2 For pressure sealing of die castings, hydraulic sealing, heat treatment, high temperature coating, internal defects (stomatal, sparse, cold septum, inclusion) and requirements not listed in this standard, they can be agreed upon by both parties.
3.6.3 Under conditions that do not affect the use of the die castings, the supplier may perform infiltration and repair (such as welding, deformation, etc.) of the die castings with the consent of the demander.
4 Quality Assurance
4.1 When there are provisions in the contract or agreement between the supplier and the buyer, the supplier shall be responsible for all tests or inspections specified in the contract. When there is no provision in the contract or agreement, the supplier may use its own appropriate means to implement this standard if the buyer agrees. For the specified tests and requirements, the acquirer shall have the right to inspect any test and inspection items in the standard, and the quality assurance standards shall be determined according to the agreement between the supply and demand sides.
4.2 According to the characteristics of die-casting production, the provision of a test batch means that every die-casting equipment under normal operating conditions in a shift of production, equipment, chemical composition, mold and any significant changes in the continuity of the operation shall be considered as a new one. Batch start.
The supplier shall randomly or statistically sample and inspect each batch of die castings to determine whether all technical requirements and the requirements of the contract or casting pattern are met. The inspection results shall be recorded.
5 test methods and inspection rules
5.1 Chemical composition
5.1.1 The test method for the chemical composition of alloys, inspection rules and retest shall comply with the provisions of GB/T15115.
5.1.2 Chemical composition of the sample can also be taken from the die castings, but must comply with the provisions of GB/T 15115
5.2 Mechanical properties
5.2.1 The test method of mechanical properties, inspection frequency and inspection rules are in accordance with the provisions of GB/T15115.
5.2.2 When the die casting body is used as a sample, the size of the cut part shall be taken and the test form shall be determined by both parties.
5.3 Inspection of geometric dimensions of die castings may be carried out according to the inspection lot size or in accordance with the provisions of GB2828, GB2829. The sampling results must comply with the standard 3.3.
5.4 The surface quality of the die-casting shall be checked on one-by-one basis and the inspection results shall comply with the provisions of 3.5 of this standard.
5.5 die casting surface roughness according to the provisions of GB 6060.1 implementation.
5.6 The surface of the die-casting part to be polished shall be in accordance with the provisions of GB 6060.4,
5.7 die-casting shot blasting, sandblasted surface according to the provisions of GB 6060.5 implementation.
5.8 Test methods for the internal quality of die castings The inspection rules are agreed upon by the supply and demand parties and may include: X-ray photographs, non-destructive testing, pressure tests, metallographic pictures and die casting profiles. The results of inspections shall comply with the provisions of 3.6.
5.9 Die castings after infiltration and repair shall be subject to appropriate quality inspection.
6 Die casting delivery, packaging, transportation and storage
6.1 When required by the contract or agreement, the supplier shall provide a proof of inspection by the purchaser to illustrate the sampling, testing and inspection of each batch of die-cast parts in accordance with the standards.
6.2 When a qualified die casting is delivered, it must be accompanied by an inspection certificate, which shall include the following contents: product name, product number, award, quantity, delivery status, manufacturer's name, inspection mark and delivery time. If there are special inspection items, the conditions and results of the inspection shall be indicated on the inspector's certificate.
6.3 The packaging, transportation and storage of die castings shall be agreed upon by both parties.