Table of Contents
What is the meaning of 3.1 certificate?
What is a 3.1 Material Certificate? A 3.1 certificate is issued by an authority which is independent of manufacturing and is validated by the manufacturers authorised inspection representative. It is equivalent to the “old” 3.1. B certificate.
What is the difference between 3.1 and 3.2 certification?
Type 3.1, Statement of compliance with the order, with indication of results of specific inspection. Authorized inspection representative by the manufacturer, but is independent of the manufacturing department. Type 3.2, Statement of compliance with the order, with indication of results of specific inspection.
What is the difference between 2.1 and 3.1 certification?
The 2.1 / 2.2 inspection certificates do not allow for any component traceability. The 3.1 / 3.2 inspection certificates are only applied at the component level and never to an assembly or final product. They are generally for metallic components but can be applied to non-metallic.
What is the difference between 2.2 and 3.1 certification?
How do I review a mill test certificate?
Read more about each field below.
- #1 – Material Heat Number.
- #2 – Material Grade (not pictured)
- #3 – Product Specifications Met.
- #4 – Material Dimensions.
- #5 – Mechanical Properties.
- #6 – Chemical Analysis.
- #7 – Heat Treatment (not pictured)
- #8 – Certified Mill Signature.
How do you read a mill test report?
A mill test report will include the following:
- Product Description. The metal product’s alloy, temper, thickness, width, and finish, along with ASTM and AMS (if required).
- Heat Number or Heat Lots.
- Mechanical/Physical Properties.
- Chemical Properties.
- Any Additional Details Specific to Your Order.
What is mill standard?
A Mill Certification Report is a certified record of the physical and chemical properties of raw material and is used in the metal industry—more specifically, for steel, stainless steel, and alloy materials.