GB/T 18449.4-2022
金属材料 努氏硬度试验 第4部分: 硬度值表
Metallic materials—Knoop hardness test—Part 4: Tables of hardness values
- 实施日期
- 2022-10-01
- ICS 分类
- 77.040.10
组合使用关键词、标准类型、状态与 ICS 分类,快速定位所需国家标准。
找到 70,494 条
GB/T 18449.4-2022
Metallic materials—Knoop hardness test—Part 4: Tables of hardness values
GB/T 4340.4-2022
Metallic materials—Vickers hardness test—Part 4:Tables of hardness values
GB/T 24160-2022
Hoop-wrapped composite cylinders with steel liner for the on-board storage of compressed natural gas as a fuel for automotive vehicles
GB/T 7966-2022
Acoustics—Ultrasonic power measurement—Radiation force balances and the requirements
GB/T 3222.2-2022
Acoustics—Description, measurement and assessment of environmental noise—Part 2: Determination of sound pressure levels
GB/T 4854.3-2022
Acoustics—Reference zero for the calibration of audiometric equipment—Part 3:Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
GB/T 17248.1-2022
Acoustics—Noise emitted by machinery and equipment—Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions
GB/T 41311.1-2022
Acoustics—Quantities and procedures for description and measurement of underwater sound from ships—Part 1: Requirements for precision measurements in deep water used for comparison purposes
GB/T 32280-2022
Test method for warp and bow of silicon wafers—Automated non-contact scanning method
GB/T 41335-2022
Nickel powders for additive manufacturing
GB/T 19076-2022
Specifications for sintered metal materials
GB/T 23520-2022
Platinum clad anode sheet and plate for cathodic protection
GB/T 17473.7-2022
Test methods of precious metals pastes used for microelectronics—Part 7: Determination of solderability and solder leaching resistance
GB/T 25942-2022
Nuclear-grade silver-indium-cadmium alloy rods
GB/T 3222.1-2022
Acoustics—Description, measurement and assessment of environmental noise—Part 1: Basic quantities and assessment procedures
GB/T 39078.2-2022
Safety requirements for escalators and moving walks—Part 2: Safety parameters meeting essential safety requirements
GB/T 24808-2022
Electromagnetic compatibility for lifts, escalators and moving walks—Immunity
GB/T 30586-2022
Copper clad aluminium flat bars
GB/T 12967.6-2022
Test methods for anodic oxidation coatings and organic polymer coatings on aluminium and aluminium alloys—Part 6: Determination of color and appearance
GB/T 12966-2022
The methods for determining aluminium and aluminium alloys conductivity using eddy current