Part Number Law 100X / WS 1.1268

Technical Data Sheet

Chemical Composition Limits
Weight % C Si Mn S Fe
LAW 100 X 0.90-1.05 0.15-0.25 0.30-0.50 0.040-0.080 Rem

Powder melted, hardenable, unalloyed free cutting steel with 1% of carbon, specially designed for small high precision parts in the watch and instrument industry also used for security parts in ABS braking systems. For all stock and size availability contact Sales.

Manufactured in Rod, Bar and coil
Coil 0.30mm to 3.5mm
Rod 0.4mm to 3.5mm
Other sizes on request. For all stock and size availability contact Sales.

Standard ISO h6, up to +/- 0.002mm on request in short time available out of roundness: 1/2 of dia tol

Tensile strength Rm: approx 670-800 MPa/mm2 depending on the dimension

Heat Treatment:
Hardening Temp 800-820ºC (up to dia 5.00mm)
780-800ºC ( above dia 5.00mm)
quenching in oil (oil temp) 50-60ºC slow furnace cooling max

Obtainable hardness
64-67 HRC

Cutting Rate
55 to 65 m/min (approx value, depending on the lubrication oil, cutting tools, shape of parts)

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.

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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.