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Testing standards and test items for aluminum alloy wheels in various countries

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BD/RZ-067-A/0

Test item: Japan (VIA) Light Alloy Wheel Test Association Regulations
Bending moment endurance test: no cracks or changes, no bolt collapse or abnormality
Impact test: 13° impact: no penetrating cracks should occur, and tire pressure should not be completely leaked within one minute;
               30° impact: no cracks or deformation shall occur, and the tire pressure shall not drop by more than 50% within 30 seconds
Radial load endurance test: no cracks or deformation, no bolt collapse or abnormality
 

Test item: German TUV (STVZO)
Bending moment endurance test: no cracks should occur, and the bolt torque reduction should not exceed 30%
Impact test: no cracks, no leakage of tire pressure within one minute
Radial load durability test: no cracks should occur, and the bolt torque reduction should not exceed 30%

 

Test item: USA SAEJ2530
Bending moment endurance test: no new cracks shall be generated, and the reduction of bolt torque shall not exceed 40%
Impact test: no penetrating cracks shall be produced, and tire pressure shall not leak within one minute
Radial load durability test: no cracks should occur, and the bolt torque should not be reduced by more than 40%

 

Test item: American SFI
Bending moment endurance test: no new cracks shall be generated, or cracks shall continue to grow in one day, and the bolt torque shall not be reduced by more than 40%
Impact test: no penetration cracks are allowed, and tire pressure shall not completely leak within one minute
Radial load durability test: no new cracks shall be generated, or cracks shall continue to grow in one day, and the bolt torque shall not be reduced by more than 40%

 

Test item: Taiwan CNS7135
Bending moment endurance test: no cracks or deformation shall occur, and the reduction of bolt torque shall not exceed 50%
Impact test: no harmful cracks shall be produced, and tire pressure shall not completely leak within one minute
Radial load durability test: no cracks or deformation shall occur, and the reduction of bolt torque shall not exceed 50%

 

 

Bending moment load durability test of aluminum alloy wheel
BD/RZ-067-A/0
Test purpose: mainly to confirm the durability test of the rim


Standard classification: VIA (Japan)
According to: Japan's light alloy wheel hub test protocol regulation set
Nature: autogenic
Calculation formula: M=Sm*W(ur+E) Among them: M=bending load, Sm=1.5(JWL), Sm=1.35(JWL-T), W=maximum load (limited use, general use) look-up table U =0.7 friction coefficient, r=maximum tire static load radius, E=offset
Test revolutions: 100,000 (JWL) 250,000 (JWL-T)
Test speed: 100RPM minimum
Wheel standard: JWL: JWX-T and VIA adopt the method of casting and marking
Validity period: 3 years, equipment license 10 years, rim random test

 

Standard distinction: TUV (Germany)
According to: STVZ20
Nature: mandatory
Calculation formula: Mbmax=2FR(urdyn+e) Among them: Mbmax=maximum bending load, FR=maximum bending load, FR=maximum load limited use, U=0.9 friction coefficient, rdyn=tire dynamic load radius (check JATMA and ETRTO Maximum), e=offset, bending test can be divided into: A: short time test Mb=0.75Mbax, B: long time test Mb=0.5Mbax
Test revolutions: SHORT 200,000; LONG 1.8 million
Test speed: up to 2400RPM
Standard for rims: The instructions for use are for the ABE engraved with the KBA number in the box, and there is no mark on the rim for TGA (easy to read and durable)
Validity period: unlimited factory inspection and random rim testing from time to time

 

Standard division: SAE (United States)
According to: SAEJ2530
Nature: mandatory
Calculation formula: M=W*(RU+D)*S where: M=maximum bending load, W=maximum bending load, U=0.7 friction coefficient, R=tire maximum static load radius, D=offset distance (take absolute value) ), S=strengthening coefficient, number of experiments 2
Test revolutions: 95,000 (S=2); 150,000 (S=1.6); 475,000 (S=1.35)
Test speed: none
The standard of rim: adopt permanent marking method (sticking SAE label)
Validity period: unlimited. Annual follow-up evaluation, inspection and rim random test

 

Standard division: SFI (United States)
According to: SFI
Nature: autogenic
Calculation formula: Bm=L*[(u+RR)+dj*S where: Bm=bending load, L=maximum load, U=0.7 friction coefficient, RR=rolling radius=0.5*(DS+DF), DS= Maximum tire diameter, DF=design coefficient=0, d=offset (take the absolute value), s=acceleration factor=1.6 rim size is 13~17″=1.5(16″、16.5*17″)
Test revolutions: 1.1 million (S=1.6) 250,000
Test speed: none
The standard of rim: adopt permanent marking method (sticking SFI label)
Validity period: unlimited. Annual follow-up evaluation, inspection and rim random test

 

Standard distinction: CNS
According to: CNS1735
Nature: mandatory
Calculation formula: M=Sm*W(ur+E) Among them: M=bending load, Sm=1.5 (light alloy wheels), W=maximum load (limited to use Class I and Class II, general use), U=0.7 friction Coefficient, R=maximum value of tire static load radius (check table: JATMAETRTO), E=offset
Test revolutions: 100,000
Test speed: 100RPM minimum
The standard of the rim: adopt the method of casting and marking (sticking qualified label)
Validity period: 5 years for inspection in batches

 

 

Radial load durability test of aluminum alloy wheels
BD/RZ-067-A/0
Test purpose: mainly to confirm the durability of the tire ring

 

Standard division: VIA (Japan)
According to: Japan Light Alloy Wheel Test Protocol Regulations
Nature: autogenic
Calculation formula: Q=Sr*W Among them: Q=radial load, W=maximum load (limited use and general use), Sr=2.25(JWL), Sr=2.0(JWL-T)
Test revolutions or mileage: 500,000 revolutions (JWL) 1 million revolutions (JWL-T)
Test speed: 40-60km/hr
Tire pressure: 4.6kg/cm2 (JWL), the maximum applicable tire pressure is ±0.1kg/cm2 (JWL)
Number of qualified tests: 1
The mark of the rim: JWL; JWL-T and VIA adopt the method of casting and marking
Validity period: 3 years, equipment license 10 years, rim random test

 

Standard distinction: TUV (Germany)
According to: STVZ0
Nature: mandatory
Calculation formula: Q=f*FR Where: Q=radial load f=2.5 (car), f=2.0 (off-the-road), f=1.5 (off-the-road), FR=maximum load
Test revolutions or mileage: 2000Km (car) 5000Km (off-the-road) 3000km9 3° angle
Test speed: 60-100km/hr
Tire pressure: 2.8 kg/cm2 (use tire pressure below 1.6kg/cm2), 4.5kg/cm2 (other)
Number of qualified tests: 1
Mark of the rim: The instructions for use are for the ABE engraved with the KBA number in the packing box; there is no mark on the rim of the TGA (easy to read and durable)
Validity period: unlimited factory inspection and random rim testing from time to time

 

Standard division: SAE (United States)
According to: SAEJ2530
Nature: mandatory
Calculation formula: F=W*K Among them: F=radial load, W=maximum load, K=strengthening coefficient, 2 experiments
Test revolutions or mileage: 1.85 million revolutions (K=2) 1.1 million revolutions (K=2.5)
Test speed: none
Tire pressure: 4.6±0.04 kg/cm2
Test qualified number: 2
The mark of the rim: adopt a permanent standard method (sticking SAE label)
Validity period: unlimited. Annual performance evaluation; inspection and rim random test

 

Standard division: SFI (United States)
According to: SFI
Nature: autogenic
Calculation formula: R=L*K Among them: R=radial load, L=maximum load, K=acceleration factor=2.25 (wheel size 13"~17")=2.0 (16", 16.5", 17")
Test revolutions or mileage: 500,000 revolutions (K=2.25JWL) 1 million revolutions (K=2.0)
Test speed: none
Tire pressure: 4.8±0.04 kg/cm2
Number of qualified tests: 1
The mark of the rim: adopt the method of casting and marking (sticking qualified label)
Validity period: unlimited. Annual performance evaluation; inspection and rim random test

 

Standard distinction: CNS
According to: CNS7135
Nature: mandatory
Calculation formula: Q= Sr*w where: Q=radial load, Sr=2.25 (light alloy wheels) Sr=2.25(JWL), W=maximum load (limited use, general use)
Test revolutions or mileage: 500,000 revolutions
Test speed: 40-100km/hr
Tire pressure: 4.6kg/cm2
Number of qualified tests: 1
The mark of the rim: adopt a permanent standard method (sticking SFI label)
Validity period: 5 years

 

 

Impact test of aluminum alloy wheels
BD/RZ-067-A/0
Test purpose: mainly to confirm the strength of the joint between the tire ring and the disc ring

 

Standard division: VIA (Japan)
According to: Japan Light Alloy Wheel Test Protocol Regulations
Nature: autogenic
Calculation formula: JWL: small passenger car VAN D=0.6w+180 where: D=maximum weight, W=maximum load (limited to general)
Installation angle: 13°±1°
Drop height: 230mm±2mm
Tire pressure: 2.0±0.1kg/cm2
Qualified number of test: 2 1. Valve 2. Diagonal position (must be moved to a different structure)
Wheel standard: JWL: JWL-T and VIA adopt the method of casting and marking
Effective date: 3 years, 10 years available, random rim testing

 

Standard division: VIA (Japan)
According to: Japan Light Alloy Wheel Test Protocol Regulations
Nature: autogenic
Calculation formula: JWL-T: 4*4 Off road light truck, truck bus H=Si*f Among them: Si=0.4mm/kgf, F=maximum load (limited to general)
Installation angle: 30°
Falling height: H=Si*f
Tire pressure: maximum pressure ±0.1kg/cm2
Qualified number of test: 2 1. Valve 2. Diagonal position (must be moved to a different structure)
The standard of the rim: adopt the method of casting and marking (sticking qualified label)
Effective date: 5 years

 

Standard distinction: STVZO
According to: TUV (Germany)
Nature: mandatory
Calculation formula: light alloy D=0.6W+180 Among them: W=max load (limited to class one and two, generally used)
Installation angle: 13°±1°
Drop height: 230mm±2mm
Tire pressure: 2br
Test pass number: between the two bones next to the ribs of the valve
Standard for rims: The instructions for use are for the ABE enclosed in the box and the KBA number is engraved; for the TGA, there is no mark on the rim (easy to read and durable)
Effective date: unlimited, irregular factory inspection and random rim testing

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