Part Number WS 1.4197

Technical Data Sheet

Chemical Composition Limits
Weight % C Si Mn Cr S Mo Ni Fe
CHRONIFER LABOR M-PLUS 0.20-0.25 0.60 max 1.50 max 12.50-14.00 0.15-0.25 0.75-1.25 1.0-1.20 Rem
Other Chemically similar Specifications
Weight % C Si Mn Cr S Mo Ni Fe
WS 1.4197 0.20-0.25 0.60 max 1.50 max 12.50-14.00 0.15-0.25 0.75-1.25 1.0-1.20 Rem
DIN X20CrNiMoS131 0.20-0.25 0.60 max 1.50 max 12.50-14.00 0.15-0.25 0.75-1.25 1.0-1.20 Rem

Chronifer Labor M-Plus is a hardenable alloyed free-cutting stainless steel for high precision parts, with a better corrosion resistance than AISI 420 F (1.4034 +S) which is manufactured in Rod, Bar and coil. For all stock and size availability contact Sales.

Material Properties
This product is a compromise between good machinability (S-Content), high wear resistance (Cr-Ni-Mo content) and possibility for hardening (C-Content). Chronifer Labor M-Plus resists to corrosion after tempering and a forced polishing of the parts.

Coil: Ø 0.50 - 3.00mm for Escomatic machines
Bars: Ø 1-1.90mm cold drawn (ground on request)
Ø 2-10.00mm ground and polished
Standard bar length: 3m surface roughness Ra 0.4 (N5-N6)

Standard Tolerances
Diameter: h8 (more accurate with short delivery on request)
Length: +/- 30 mm
Out of roundness/eccentricity: 1/2 of dia tol.

Heat Treatment
Hardening: 1000-1050 ºC, slow furnace cooling (2-4 hours)
Soft annealing: 750-850 ºC
Max obtainable hardness 48-52 HRC

Cutting Rate
40-55m/min (approximate value, depending on the lubrication oil, the cutting tools, the 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.

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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.