Premium 45# Steel S25c Round Bar for Stamping Mold Ejector Pins

• Overview
• Scope of application
• Our Advantages
• Product Parameters
• Detailed Photos
• Packaging & Shipping
• Plant equipment
• Company Profile
• FAQ

Overview

Basic Info.

Model NO.	45#/S25C
Standard	AISI, ASTM, GB, JIS, DIN, BS
Technique	Cold Drawn
Application	Structural Steel Bar, Tool Steel Bar, Die Steel Bar, Hydraulic Valve Core
Alloy	Non-alloy
Special Use	Cold Drawn Steel Round Bar
Carbon Content	0.22-0.28%
Tensile Strength	450-600 MPa
Yield Strength	≥ 245 MPa
Hardness	70-85 Hrb (Rockwell B)
Surface Finish	0.8-1.6 μm Ra (Mirror Smooth)
Straightness	≤ 0.3mm Per 300mm Length
Transport Package	Wooden Box/Hollow Plat
Specification	GB25/1015/S25C/C25/C25E4
Trademark	GX
Origin	Shijiazhuang
HS Code	7215900000
Production Capacity	30000t/Years

Product Description

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, and is widely used in many industries with strict material performance requirements.

1.GX is Factory or Trade enterprise?

GX is an enterprise incorporating Factory and Trade .2.Where is your factory located? How can I visit there? Headquarter:Hi-tech development zone,Shijiazhuang,Hebei ProvinceFactory:Xingtang County,Shijiazhuang,Hebei ProvinceYou can take airplane to Shijiazhuang,then we can pick you up to factory by car about 1 hour.3.Which Certificate of your product does your company have? ISO9001 IATF 16949:20164.Before order, we need sample for test ,is it ok?
Yes, of course. We provide sample for test before bulk order. 5.How does your company to control your product quality?Quality is the cornerstone of the survival and development of GX. We control quality from the beginning to the end all the time.

Scope of application Our Advantages 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 components610.
	• 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≤0.035610	• Hardness: ≤156 HB (as-rolled)210
45#	• US: 1045	C: 0.42-0.50	• Tensile: ≥600 MPa	Gears, axles, bolts, hydraulic parts; requires heat treatment for high strength19.
	• 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≤0.03519	• Hardness: ≤229 HB (untreated)110
Q235	• US: ASTM A36	C≤0.22	• Tensile: 375-500 MPa	Non-critical structures (brackets, frames, construction)610.
	• EU: S235JR (1.0038)	Mn≤1.40	• Yield: ≥235 MPa
	• JP: SS400	Si≤0.35	• Elong.: ≥26%
		P≤0.045, S≤0.050610	• Hardness: 120-150 HB6
40Cr	• US: 5140	C: 0.37-0.44	• Tensile: ≥980 MPa (quenched)	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 (annealed)
		Si: 0.17-0.375
GCr15	• US: SAE 52100	C: 0.95-1.05	• Tensile: ≥1,800 MPa (hardened)	Bearings, precision instruments, high-wear components5.
	• EU: 1.3505 (100Cr6)	Cr: 1.40-1.65	• Hardness: 62-64 HRC
	• JP: SUJ2	Mn: 0.25-0.455	• Fatigue res.: High5
42CrMo	• US: 4140	C: 0.38-0.45	• Tensile: ≥1,080 MPa	Heavy-duty parts (gears, drill tools, molds), high fatigue resistance required37.
	• EU: 1.7225 (42CrMo4)	Cr: 0.90-1.20	• Yield: ≥930 MPa
	• JP: SCM440	Mo: 0.15-0.25	• Elong.: ≥12%
		Mn: 0.60-0.9037	• Hardness: ≤217 HB (annealed)37
1215	• US: AISI 1215	C≤0.09	• Tensile: ≥420 MPa	Precision fasteners, bushings; easy machinability, eco-friendly48.
	• EU: 11SMn30 (1.0726)	Mn: 0.75-1.05	• Elong.: ≥22%
	• JP: SUM22	S: 0.26-0.35	• Hardness: ≤160 HB (cold-drawn)8
		P: 0.04-0.09
		Pb-free48
1214	• US: AISI 1214	C≤0.15	• Tensile: ≥540 MPa	High-speed machining (screws, valves); contains lead for improved chip-breaking4.
	• EU: 11SMnPb30 (1.0727)	Mn: 0.85-1.15	• Hardness: 160-190 HB (cold-drawn)
	• JP: SUM22L	S: 0.26-0.35
		P: 0.04-0.09
		Pb: 0.15-0.354

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