Material Lab · Hardness Lab

"Hardness: 150" is not a specification.

A hardness value only means something as a complete record — method, load, dwell, thickness, measurement location, temper and standard. This lab does not convert between HB, HV and Rockwell scales, because no universal conversion exists.

Screen A

Build a complete hardness record

Fill in what you have. The assessment shows what is still missing before the value can be used in a controlled comparison.

Test method Reported value

Scale / test load e.g. HV0.2, HBW 10/3000 Dwell time s

Strip thickness mm Measurement location

Temper / material condition Test standard

Why every field matters

A test at one location may not represent the whole coil, thin strip limits which loads are even valid, and the same alloy spans very different hardness bands across tempers. Standards bodies describe Brinell, Vickers and Rockwell as different indentation methods — equal numbers on different scales are not the same result.

A complete record looks like:

HV 0.2 / 10 s / 23°C / strip thickness 0.30 mm / mid-width reading / R550 temper / EN ISO 6507-1

Screen B

Which results can be compared?

Decide whether each pair of records can fairly be treated as comparable.

Screen C

RFQ hardness requirement builder

Assemble the requirement the way a supplier can actually quote and certify it.

Method Acceptance range e.g. 150–180

Load / scale Dwell s

Measurement location

Grade Temper

Thickness mm Acceptance standard

Reporting

Requirement preview

This builder formats a requirement; it does not validate that the range is achievable for a given grade and temper. Agree achievable bands with the supplier before fixing acceptance criteria.