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High Strength 35CrMo Carbon Steel Round Bar – Alloy Structural Steel Rod for Machinery & Automotive Applications

35CrMo carbon steel bar is a high-strength alloy structural steel known for its excellent toughness, wear resistance, and heat treatment performance. Ideal for heavy-duty mechanical parts, automotive components, and high-stress applications.
 
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  • 35CrMo carbon steel round bar

  • ZHONG RUN

PRODUCT DESCRIPTION

Products
35CrMo carbon steel round bar
Place of Origin
 China
Grade
Q235B/SS400/Q355B/S235JR/S355JR
Standard
ASTM / AISI / JIS / EN / DIN
Alloy Or Not
Non-Alloy
Technical
cold or hot rolled
Processing Service
Bending, Welding, Punching, Cutting
Delivery Time
31-45 days
Length
12m
Invoicing
by theoretical weight
Application
building structure and engineering structure
Payment
T/T; L/C


35CrMo steel bar Steel Chemical Composition:

Element

Composition (%)

Carbon (C)

0.32~0.40

Silicon (Si)

0.17~0.37

Manganese (Mn)

0.4~0.7

Chromium (Cr)

0.8~1.0

Phosphorus (P)

≤0.035

Sulfur (S)

≤0.035

Molybdenum (Mo)

0.15~0.25

Nickel(Ni)

≤0.30

Copper

≤0.30


PRODUCT OVERVIEW
35CrMo carbon steel bar is an alloy structural steel containing chromium and molybdenum as main alloying elements. It offers outstanding mechanical strength, high tensile resistance, and excellent hardenability. With superior fatigue strength and impact resistance, it is widely used in manufacturing precision components that demand high strength and toughness.

PRODUCT FEATURES

  • Material: 35CrMo (GB standard), equivalent to AISI 4135 / DIN 34CrMo4

  • Shape: Round / Square / Hexagonal bar

  • Diameter: 10mm – 300mm (customizable)

  • Length: 1m – 12m or as required

  • Surface: Black / Peeled / Polished / Turned

  • Heat Treatment: Annealed / Normalized / Quenched and Tempered

  • Tolerance: H9–H11 or customized


MECHANICAL PROPERTIES 

  • Tensile Strength: ≥ 980 MPa

  • Yield Strength: ≥ 835 MPa

  • Elongation: ≥ 12%

  • Impact Toughness: ≥ 63 J/cm²

Standards Available: GB/T 3077, ASTM A29, JIS G4053, DIN EN 10083


PRODUCT SHOW

round bar (4)


steel bar


carbon steel bar (1)


APPLICATION

35CrMo steel bars are extensively used in automotive, aerospace, heavy machinery, power transmission, and oil & gas industries. Typical applications include:

  • Crankshafts, gear shafts, and connecting rods

  • High-pressure fasteners and engine components

  • Tool holders, drill collars, and other high-stress wear parts

  • Transmission gears and axles

  • Structural parts requiring high fatigue resistance and strength

Its high hardenability and wear resistance make it especially suitable for quenching and tempering treatments, ensuring excellent performance in extreme operating conditions.


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