Part Number WS 1.4057 X

Technical Data Sheet

Chemical Composition Limits
Weight % C Si Mn P S Cr Ni N Fe
CHRONIFER M-15X 0.12-0.20 1.00 max 1.00 max 0.030 max 0.015 max 15.0-17.0 1.50-2.0 0.10 max bal
Other Chemically similar Specifications
Weight % C Si Mn P S Cr Ni N Fe
WS 1.4057 0.14-0.23 1.00 max 1.00 max 0.045 max 0.030 max 15.5-17.5 1.50-2.50   bal

Chronifer M-15X is a martensitic hardenable stainless steel which is manufactured in Rod, Bar and coil. Chronifer M-15X is execution in 3m (2m) round bars as well as in coils. For all stock and size availability contact Sales.

Material Features
Chronifer M15X is a hardenable, martensitic stainless steel. It is vacuum melted, nitrogen alloyed, gas atomized, hot isostatic pressing (HIP) consolidated, warm and subsequently cold drawn. Chronifer M-15x has excellent microstructural cleanliness and homogeneity with very fine microstructure (ASTM grain size no ≤ 10). All the properties of Chronifer M-15X are significantly superior to the standard allloy 1.4057 (AISI 431). Its machinability is unproblematic and can be reproduced from one lot to the next. Its polishability is remarkable and the corrosion resistance (after heat treatment is outstanding.

Availability and Tolerances
Coil: Ø 0.70-3.00 mm : ISO fg7
Bars: Ø 0.70-2.99 mm : cold drawn; ISO h5, surface finish Ra ≤0.2
Bars Ø 3.00 - 12.00mm : cold drawn; ground & polished, ISO h5, surface finish Ra ≤0.2

Extra tolerance on request.

Cold Formability
Very well adapted to all secondary and complementary cold deformations such as burnishing, thread, rolling, stamping.

Very well adapted to all polishing methods and processes

Tensile Strength
Tensile Strength (Rm) >800MPa

Cutting Rate
vc ~ 45 . 60 m/min, value depending on the lubrication oil, cutting tools and shape of parts.
Cutting oil e.g INOX or ORTHO NFX of Motorex

At Aircraft Materials all stock items can be shipped out within 24 hours, usually within the same day. Even cutting orders for bar or sheet can be processed and dispatched the same day, and for time-critical situations such as AOGs, we have a dedicated AOG service desk ready to help (

Thanks to our global logistics network we can source from anywhere in the world in just a few days. We use a range of transport partners to enable us to ship overnight within the U.K. and Europe and provide fast shipping solutions to the rest of the world. If your requirement is urgent we can offer a priority shipping service, but also if time is not so critical we can offer more cost-effective options to ensure you get the best value for money. To find out more about our services click here.

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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

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