Grade discussion
42CrMo4 / 4140, 40Cr, 34CrNiMo6, and CK45 / 1045 may all appear in shaft discussions depending on load, toughness, machinability, and delivery condition.
Technical Resource
Choosing Steel Bars for Shaft Manufacturing
Shaft manufacturing starts with application, load, machining route, delivery condition, and inspection plan. The steel grade should be selected around the part and downstream process, not only the name on the drawing.
Buyer Guide
What to review before quotation.
Use this guide to prepare a clearer specification and reduce back-and-forth during RFQ review.
Processing route
Buyers should confirm hot rolled, normalized, QT, peeled, ground, cut-to-length, or machining-preparation needs before quotation.
Inspection plan
For demanding shafts, discuss chemical verification, mechanical testing, dimensional inspection, UT on request, and traceability requirements.
Related Pages
Continue with the relevant product, application, and RFQ pages.
Open this page to connect the guide topic with product, processing, document, or RFQ details.
Open this page to connect the guide topic with product, processing, document, or RFQ details.
Open this page to connect the guide topic with product, processing, document, or RFQ details.
Open this page to connect the guide topic with product, processing, document, or RFQ details.
FAQ
Common buyer questions.
Which steel is used for shafts?
Common discussions include 42CrMo4 / 4140, 40Cr, 34CrNiMo6, and CK45 / 1045 depending on the application and condition.
Should shaft bars be QT?
QT may be required for higher-load shaft applications, but the target properties and standard should be stated in the RFQ.
What should shaft buyers confirm?
Confirm grade, condition, diameter, length, machining route, straightness, inspection, and certificate requirements.
RFQ
Turn this guide into a clear RFQ.
Include delivery condition, processing requirement, destination port, testing requirements, and certificate expectations so the supply route can be reviewed clearly.