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Part Number

High carbon chromium steel

Chemical Composition Limits

Weight % C S Cr Mo Vanadium Fe



 0.85-0.95 0.03 Max  17.0-19.0  0.90-1.30 0.07-0.12  Rem 

Other Chemically similar Specifications 

Weight % C S Cr Mo Vanadium Fe
WS 1.4112  0.85-0.95 0.03 Max   17.0-19.0  0.90-1.30 0.07-0.12  Rem 
x 90 CrMoV 18  0.85-0.95 0.03 Max   17.0-19.0  0.90-1.30 0.07-0.12  Rem 
AISI 440B~  0.85-0.95 0.03 Max   17.0-19.0  0.90-1.30 0.07-0.12  Rem 

Our Chronifer M-17B  material is Manufactured in Rod, Bar and coil

AISI 440B ~ Stainless Steel


Material Properties

This steel is designed to provide stainless properties with excellent hardness.  In some respects it behaves similarly to tool steel.  Chronifer M 17B resists corrosion from mild atmospheres, fresh water steam, ammonia, many petroleum products and organic materials and several mild acid environments.




Coils: Cold drawn 10-35kg coil

Bars 0-1.99mm: Cold drawn and polished

Bars 2.00-40mm: Cold drawn, ground and polished

Bars Length : 2m or 3m. Surface roughness N5-N6



Standard Tolerances

Diameter: h7

Out of roundness/cylindricity :1/2 of dia tolerance

Tolerance in length : +50/-0mm



Corrosion Resistance

This grade is used in the hardened and tempered condition for a good corrosion resistance.  For optimum, corrosion resistance, surfaces must be free of scale and foreign particles.



Heat Treatment

Soft annealing: 750-800C

Slow furnace cooling (2-4 hours)

Hardening: 1000-1080C

Max obtainable hardness 57-59 HRC



Cutting Rate

20-35m/min (approx value, depending on the lubrication oil, the cutting tools, the shape of parts)



Stock Range

Standard dimensions from 0.80 to 24.00mm with many intermediate dimensions.






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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