Technical resources

The reference data, free and without a form

Everything here is open. No email gate, no download form. If the information helps you specify the right steel, that is worth more to us than a captured address.

Calculator
Weight Calculator
Round, hex and square. Weight per metre, per piece and total in kg and MT — with the formulas explained.
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Wizard
Grade Selector
Four questions about your part, one recommendation, and the reasoning behind it — including what to watch out for.
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Comparison
Grade Comparison
Put any two or three grades side by side: chemistry, properties, machinability, sizes and applications.
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Reference
Tolerance Chart
ISO 286 h9, h10 and h11. Enter your size and get the exact maximum and minimum diameter.
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Reference
Master Composition Table
All ten grades and every element in one printable table. Sortable by family.
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Reference
International Equivalents
EN, BS, DIN, AISI / SAE, JIS and IS designations for every grade we produce.
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Reference
Machinability Guide
Machinability index for all ten grades, ranked, with what actually drives the number and how to use it.
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Downloads
Grade Datasheets
A printable single-page datasheet for each of the ten grades.
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Also useful

Written explanations

The tools give you numbers. The Knowledge Hub explains what the numbers mean — why lead changes machining, what the H in 16MnCr5H certifies, and how to read a mill test certificate properly.

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Weight Calculator

Grade Selector

Grade Comparison

Tolerance Chart

Master Composition Table

International Equivalents

Machinability Guide

Grade Datasheets

Written explanations

Tell us what you need