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 we specialise in the rapid turn-around of orders, with most stock items ready for shipping out the same day to anywhere in the world. For time-critical orders, such as AOGs use our AOG service desk (, the team are dedicated to processing and dispatching orders on the same day, even for cutting orders on bar and sheet products.

Our expertise in global logistics enables us to source material from anywhere in the world in a matter of days and provide fast shipping solutions to all our customers, whichever country they are in. We use a range of transport partners to ship overnight within the UK and Europe, and offer a full range of logistics solutions from priority express services to more cost-effective economy shipments all around the globe. To find out more about our services click here.

Return to Main Precision Ground Material

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.