Precision Cold Drawn Steel Round Bar for Hydraulic Valve Spool Custom Wear Resistant Material China Manufacturing 1020/1045/ASTM A36/5140/SAE 52100/4140

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Precision Cold Drawn Steel Round Bar for Hydraulic Valve Spool Custom Wear Resistant Material China Manufacturing 1020/1045/ASTM A36/5140/SAE 52100/4140

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Product Description

Basic Information

Model NO.

1020/1045/ASTM A36/5140/SAE 52100/4140

Type

Alloy Steel Bar

Standard

AISI, ASTM, GB, JIS

Technique

Cold Drawn

Application

Structural Steel Bar, Tool Steel Bar, Die Steel Bar, Hydraulic Valve Core

Alloy

Special Use

Cold Drawn Steel Round Bar

Hardness

Max 207 Hb

Tensile Strength

Min 980 MPa

Yield Strength

Min 785 MPa

Carbon (C)

0.37 to 0.44

Chromium (Cr)

0.80 to 1.10

Transport Package

Wooden Box/Hollow Plat

HS Code

7214300000

Production Capacity

30000t/Years

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Product Description

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Scope of Application

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Our Advantages

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Product Parameters

Material	Foreign Equivalents	Chemical Composition (%)	Mechanical Properties	Primary Applications
20#	US: 1020	C: 0.17-0.23	Tensile: ≥410 MPa	Low-stress structural parts (bolts, shafts, levers), carburized components.
	EU: 1.0402 (C22)	Si: 0.17-0.37	Yield: ≥245 MPa
	JP: S20C	Mn: 0.35-0.65	Elong.: ≥25%
	-	P≤0.035, S≤0.035	Hardness: ≤156 HB
45#	US: 1045	C: 0.42-0.50	Tensile: ≥600 MPa	Gears, axles, bolts, hydraulic parts; requires heat treatment.
	EU: 1.0503 (C45)	Si: 0.17-0.37	Yield: ≥355 MPa
	JP: S45C	Mn: 0.50-0.80	Elong.: ≥16%
	-	P≤0.035, S≤0.035	Hardness: ≤229 HB
40Cr	US: 5140	C: 0.37-0.44	Tensile: ≥980 MPa	High-strength shafts, gears; automotive/tooling parts.
	EU: 1.7045 (41Cr4)	Cr: 0.80-1.10	Yield: ≥785 MPa
	JP: SCr440	Mn: 0.60-0.90	Hardness: ≤207 HB
	-	Si: 0.17-0.37	-

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Detailed Photos

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Packaging & Shipping

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Plant Equipment

Cold drawn round steel is a high quality metal material made by cold drawing process. It is made of hot-rolled round steel as billet, which is drawn by strong force at room temperature through a specific mold, so that the diameter of the round steel is accurately reduced. This process gives it many advantages: high dimensional accuracy and precise control of diameter deviation to meet the needs of precision manufacturing; The surface is very smooth, low roughness, reduce the subsequent grinding process; Due to the cold hardening effect, the strength and hardness are significantly improved, and the internal organization is uniform, and the mechanical properties are stable. Cold-drawn round steel is used in the field of machinery manufacturing to manufacture shaft, gear and other key parts; In the automobile industry, it is the ideal material selection for engine crankshaft, transmission shaft and other components; In the construction industry, it is often used to make strong connectors and support structures.

Frequently Asked Questions

Are you a Factory or Trade enterprise?

We are an enterprise incorporating both Factory and Trade capabilities to provide comprehensive service.

How can I visit your facility?

You can take a flight to the nearest airport, and we can arrange transportation to pick you up for a tour of our production site.

Which quality certificates do your products hold?

Our products and processes are certified under ISO9001 and IATF 16949:2016 standards.

Can we request samples for testing before placing a bulk order?

Yes, we provide samples for quality testing and verification prior to proceeding with bulk production.

How do you control product quality?

Quality is our cornerstone. We implement strict quality control protocols from the raw material selection through every stage of production to the final inspection.

What are the main benefits of cold drawn steel?

Cold drawn steel offers superior dimensional accuracy, a smoother surface finish, and enhanced mechanical strength compared to hot-rolled alternatives.