Guides to help you specify the right steel grade, blade and machine — and avoid costly mistakes.
What 420SS is, how it maps to 1.4021 and SUS420J1/J2, the hardness you can reach, and how to specify it without buying the wrong carbon level.
Why this ~0.5% carbon steel is the default plastic mould base material, its cross-standard equivalents, and the condition to order.
Are they the same? Hardness ranges side by side, what “equivalent” really means, and how to specify a 400 HBW plate correctly.
Huakai Metal