35CrMo alloy steel round bar for fastener, shaft, and pressure-related part review.

35CrMo offers high strength and good toughness after heat treatment, which makes it a practical option for equipment working under pressure and load.

35CrMo alloy steel round bar for fastener, shaft, and pressure-related part review.

35CrMo, 4135, and 34CrMo4 cross-reference grades

State the required project standard first, then list acceptable reference grades so Cr-Mo alloy steel chemistry, QT condition, and inspection requirements are aligned for supplier review.

  • GB 35CrMo
  • ASTM 4135
  • DIN / EN 34CrMo4 reference route
  • Project standard confirmed during RFQ review

35CrMo QT condition, threading, machining, and surface route

35CrMo buyers should clarify whether the route is QT supply, hot rolled or forged bar, rough machined blank, thread-ready bar, or a fastener/pressure-part route requiring further processing.

  • QT condition reviewed by order
  • Hot rolled or forged supply route
  • Machining, threading, or thread-ready preparation
  • Surface protection and packing if required

35CrMo applications for fasteners, shafts, and pressure-related parts

35CrMo is commonly reviewed for Cr-Mo alloy strength and toughness in high-strength fasteners, bolts, shafts, petroleum-related equipment, and pressure-related mechanical parts.

  • High-strength bolts and fastener bars
  • Mechanical shafts and load-bearing parts
  • Pressure-related equipment parts
  • Petroleum-related equipment components

Inspection and RFQ details for 35CrMo round bar

Before quotation, state standard, size, quantity, QT or heat-treatment requirement, part type, threading route if relevant, MTC, mechanical testing, UT if required, packing, and destination.

  • Chemical composition and mechanical testing
  • Hardness or strength target if specified
  • MTC, traceability, UT, or third-party inspection
  • Thread route, packing, destination, and drawings when available

Production route

Start with a likely route

Use this page as a starting point. Load the route, then adjust each selection to match your order.

Starting point only. The exact route depends on grade, dimensions, application, specification, and order requirements.

  1. 01
    Heat treatmentQuenched and tempered
  2. 02
    Surface processingGround or rough-machined
  3. 03
    InspectionOrder-specific standard checks
  4. 04
    PackingExport protection and marking
Load this route

35CrMo buyer questions before RFQ

What is 35CrMo round bar used for?

35CrMo round bar is commonly reviewed for high-strength fasteners, bolts, shafts, pressure-related equipment parts, petroleum-related components, and heavy mechanical parts that need Cr-Mo alloy strength after heat treatment.

When should buyers compare 35CrMo and 42CrMo?

Compare 35CrMo and 42CrMo when a fastener, shaft, pressure part, or threaded component route could fit either Cr-Mo grade. Load, heat treatment, mechanical targets, thread route, and inspection needs should guide the review.

What should a 35CrMo fastener or pressure-part RFQ include?

Send standard, diameter, length, quantity, delivery condition, part type, thread route if applicable, mechanical-property or hardness target if specified, MTC, traceability, inspection needs, packing, and destination.

35CrMo quotation questions

Is 35CrMo related to 4135 or 34CrMo4?

35CrMo, 4135, and 34CrMo4 are commonly reviewed as related Cr-Mo alloy steel routes, but buyers should specify the required project standard first and confirm chemistry, condition, mechanical targets, and inspection wording.

Is 35CrMo suitable for high-strength fastener bars?

35CrMo can be reviewed for high-strength fastener bar routes when the buyer states part type, strength or hardness target, heat treatment, thread route, inspection requirements, and destination. Final suitability depends on the project standard.

What inspection documents matter for 35CrMo round bar?

Common document requests include MTC, chemical composition, mechanical testing, hardness if required, heat number traceability, dimensional inspection, UT if specified, third-party inspection if specified, packing list, and shipping documents.

35CrMo / 34CrMo4 / 4135 standards, QT condition, pressure applications, and inspection points.

Review common cross-reference grades, chemical and mechanical data, diameter range, delivery condition, common applications, and testing requirements.

Grade focus35CrMo
Key pointStrong and tough after heat treatment.
Suitable useCommonly reviewed for pressure-related and petroleum-related applications.
Review focusPractical Cr-Mo alloy steel for pressure and fastener use.

35CrMo cross-reference grades

Cross-reference grades must be confirmed against the required project standard before quotation.

GB
35CrMo
DIN
34CrMo4
ASTM
4135

35CrMo chemical composition

C
0.32 - 0.40
Si
0.17 - 0.37
Mn
0.40 - 0.70
Cr
0.80 - 1.10
Mo
0.15 - 0.25

35CrMo mechanical properties

Tensile strength
≥ 900 MPa
Yield strength
≥ 700 MPa

35CrMo supply specifications

Diameter
20 - 350 mm
Length
3 - 12 m
Condition
QT
High pressure equipment
Bolts and fasteners
Mechanical shafts
Petroleum equipment

35CrMo inspection points

  • Chemical analysis
  • Mechanical testing
  • Dimensional inspection

35CrMo manufacturing options

  • QT supply
  • Hot rolled or forged supply
  • Machining support
Detailed RFQ guidanceOpen details

35CrMo procurement summary

  • Practical Cr-Mo alloy steel for pressure and fastener use.
  • This normalized page keeps the same data from the source note but presents it in a more usable procurement layout.

35CrMo technical overview

  • 35CrMo is a chromium-molybdenum alloy steel with high strength and good toughness after heat treatment. It is commonly reviewed for pressure-related equipment and heavy mechanical components.

Send a 35CrMo round bar requirement for pressure, fastener, or shaft use.

Include diameter, length, quantity, QT requirement, part type, inspection needs, processing route, and destination.

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