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X35 ST +

100% martensitic stainless steel, the X35 ST+ is developed for the manufacture of watch movement components. It offers excellent skills for bar turning, cutting, polishing and rolling. The X35 ST+ can replace traditional stainless steel as well as leaded and lead-free steels, and will also offer very good corrosion resistance.

Main fields of application of X35 ST +

Many diverse and varied components are now prescribed in X35 ST+ by watch manufacturers: screws, screw feet, studs, winding rods, nucleus, ratchet, barrel shaft, second pinion, balance pin, pins, various other pinions and pins.

Chemical composition of X35 ST +

C 0.50 max S 0.15 min
Mn 1.50 max Cr 12 - 14
P 0.06 max Mo 0.60 max

Mechanical properties of X35 ST +

before heat treatment   after heat treatment  
Hardness: approx. 220 HV Hardness: 670 -700 HV (58-60) HRC
Rm: approx. 820 N/mm² Possible: 550-580 HV (with adapted
Rp0.2: approx. 740 N/mm²   tempering temperature)

Delivery program

Round bars drawned < ø 2.00 mm h6

Round bars grounded  ø 2.00 mm - 8.00 mm h6

 Round bars grounded ø 10.00 mm - 20.00 mm h8

Bars Lg = 3000 - 3050 mm

Further sizes available upon request.

Material Outlet by Hempel

ECONOXX.com offers buyers a new and uncomplicated procurement channel, which also includes small quantities and materials in special alloys at favourable conditions.

Contact us

Jérôme Evrard
Jérôme Evrard
Sales Manager

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