GAUGE BLOCK SET ALLOY STEEL 12PC 10-291. 8MM ISO3650 GRADE 0

An alloy gauge block set is a collection of precision-machined blocks made from high-quality alloy materials,used as length standards for calibrating and setting measuring equipment like micrometers, calipers, and otherprecision tools. These blocks, also known as Johansson blocks or slip gauges, are highly accurate in terms ofdimensional stability and are commonly used in machining, manufacturing, and metrology labs.

A steel gauge block set is a precision tool used for calibration and measurement in industrial, manufacturing,and laboratory settings. Also known as Johansson blocks or slip gauges, gauge blocks are rectangular or squarepieces of steel (or other materials) that have been ground and lapped to a precise thickness. They are primarilyused to calibrate or verify the accuracy of other measuring instruments, set up machine tools, and establishexact measurements for machining processes.

Applications:

• Machining and Tooling: Used in machine shops to ensurethe precision setup of equipment.
• Inspection and Calibration: Employed in metrology labsto verify the accuracy of various measurement tools.
• Precision Manufacturing: Ensures parts and tools meet exactdimensional specifications for industries like aerospace, automotive, and electronics.

An alloy gauge block set is an essential tool for ensuring highlevels of measurement precision, making it indispensable in environments where accuracyis critical.

Key Features of an Alloy Gauge Block Set:

1. Material Composition:

   • The blocks are typically made from alloy steel, chromium carbide, or ceramic materials. Alloy steel gauge blocks are popular for their balance of strength, wear resistance, and cost-effectiveness.
   • The alloy material helps maintain dimensional stability over time and ensures resistance to wear and corrosion.
   • Some sets use tungsten carbide for extremely high wear resistance and hardness, ideal for long-term, high-use environments.

2. Precision Flatness and Surface Finish:

   • Gauge blocks are finely polished to ensure extremely flat and parallel surfaces. This precision allows them to be 'wrung' together (where the blocks stick to each other due to molecular attraction and a thin film of air between them) without using external force.
   • The surface finish is critical to their performance, typically polished to mirror finishes, ensuring accuracy when used for setting or calibrating measuring instruments.

3. Accuracy and Tolerances:

   • Each block in the set is manufactured to tight tolerances, typically within microns (millionths of a meter), and is categorized by grades based on accuracy:
     • Grade 0: Highest accuracy, used for calibration of precision tools.
     • Grade 1: Suitable for high-precision manufacturing tasks.
     • Grade 2: General inspection and calibration use.
   • Calibration certificates may be included with gauge block sets to verify their precision and traceability to national or international standards (e.g., NIST, ISO).

4. Applications:

   • Calibration: Used to calibrate micrometers, calipers, height gauges, dial indicators, and other precision measurement tools.
   • Tool setup: Used to set up machine tools to ensure accurate machining of components.
   • Dimensional inspection: Utilized to inspect and verify the dimensions of machined parts or tools.
   • Reference standard: Acts as a reference standard for length in precision metrology labs or manufacturing settings.

5. Case and Handling:

   • Gauge blocks are supplied in a protective case (wooden or plastic) with individual compartments to protect the blocks from damage, contamination, or moisture.
   • Handling: The blocks must be handled with care to avoid scratches or damage to the surface.

6. Wringing Ability:

   • One of the key features of a gauge block is its ability to be 'wrung' or stacked together with other blocks to create a specific length. This wringing ability ensures that there is minimal error when combining blocks, as the tight fit prevents any air gaps or irregularities between them.

7. Temperature Sensitivity:

   • The thermal expansion coefficient of alloy materials is carefully controlled to minimize the effect of temperature changes on the block's length. These blocks are calibrated at a reference temperature, usually 20°C (68°F), which is standard in metrology.

8. Certification:

   • Alloy gauge block sets often come with a calibration certificate that verifies their dimensional accuracy and provides traceability to national or international standards such as ISO 3650.

Technical Specifications