Load
Impact, bending, pressure and number of cycles.
MATERIALS AND TECHNOLOGY
Materials and process choices
Steel 45 (45#), 40Cr, 42CrMo, 20CrMo, 20CrMnTi and GCr15 in the context of a specific part.
Steel 45/40Crstructural steels
42CrMoaccording to load and drawing
20CrMofor matched layer
MATERIALS AND TECHNOLOGY
Steel grade does not describe the entire finished part
The company's materials list steel 45 (designated 45# in the original catalog), 40Cr, 42CrMo, 20CrMo, 20CrMnTi and GCr15. Applicability depends on the cross-section, required core properties, working surface and selected heat treatment.
WHAT TO CHECK
How to link material and function
The choice is confirmed by a specific design.
Section
Wall thickness and geometry transitions.
Hardening
Volumetric, induction or cementation scheme.
Finish
Allowance and condition of the working surface.
HOW THE WORK IS CONSTRUCTED
The material passes through the entire control route
Workpiece identification is linked to heat treatment and finished batch. If necessary, spectral analysis, hardness, metallography or other agreed methods are determined.
RESULT
Material, processing and inspection in one specification
This approach excludes the transfer of parameters from one series to another just because of a similar shape.
- BrandSource material.
- ConditionProcessing route.
- CheckMethod and zone.
BEFORE AGREEMENT
Steel grade is not considered separately from processing
The choice of material is related to geometry, load, core properties and work surface requirements. Different routes are possible for one grade, so the request indicates not only the designation of the steel, but also the required characteristics after processing. Unconfirmed combinations are marked as questions for approval.
Material
Brand, designation standard and condition of the workpiece.
Hardening
Method, zone, required hardness and layer depth.
Finish
Size, roughness and coating after heat treatment.
Check
Control method and criterion for a specific batch.
NEXT STEP
Specify not only the brand, but also the required properties
Add work area, hardness, layer depth and operating conditions.