7mm mm Diameter Steel Bright Black Round Bar Q235 1020 1045 4140 Black Bright Alloy Steel Round Bar Rod Mold Tool Steel

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Alloy Steel
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Bright, Chrome Plated
• Model NO.: Q235 1020 1045 4140
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Wear-Resistant Steel, Cold Heading Steel, Free-Cut
• Transport Package: Standard Seaworthy Export Packaging or as Required
• Specification: 3000-9000mm
• Trademark: meide
• Origin: Shandong, China
• HS Code: 7215500000
• Production Capacity: 1000 Ton/Month

Product Description

About products

The bright round steel bar is a round steel with a bright surface and no rolling defects and decarburization layer on the surface. It can be subdivided into peeled, polished, and polished materials. Silver bright steel is used as machine structural steel for various specialized purposes, such as for bolts with strong wear. In addition, such as spindles, piston rods, spokes, and similar components can be used as tool steel in the quenched state.

Product Description

Item	Hard Chromed Rod	Induction Hardened Chromed	Nickel and Chrome Plating Bars
Roundness	Diameter tolerance / 2	diameter tolerance / 2	diameter tolerance / 2
Standard Length	-for Ø ≤ 60 mm: 5600 -6200mm -for Ø≥60 mm: 5800 -7200mm  Upon request: special lengths on all diameters	- for Ø ≤ 60 mm: 5600 - 6200 mm - for Ø ≥ 60 mm: 5800 - 7200mm  Upon request: special lengths on all diameters	Up to 6000 mm  Upon request: special lengths on all diameters
Surface Roughness	Ra max. 0.20 µm  (statistic average: 0.05-0.15 µm)	Ra max. 0.20 µm  (statistic average: 0.05- 0.15 µm)	Ra max. 0.20 µm (statistic average: 0.05-0.15 µm)
Chrome Layer Thickness	min. 900 HV (0.1)	min. 900 HV (0.1)	min. 25 µm
Straightness	≤ Ø16 mm: max. 0.3 mm: 1000 mm > Ø16 mm: max. 0.2 mm: 1000 mm	≤ Ø16 mm: max. 0.3 mm: 1000 mm > Ø16 mm: max. 0.2 mm: 1000 mm	max.0.20 mm/1000 mm

mechanical behavior

Heat treatment or condition	Hardness HBW	tensile strength σb  Mpa	Yield point σs  Mpa	Elongation δ  %	Reduction of area ψ  %	Impact absorbed energy KV2  J
Quenching+tempering	217~277	≥735	≥588	≥22	≥50	≥118
Heat treatment system: Quenching 820~880 ° C oil cooling; Tempering 550~650 ° C quenching

 

Application

Chromium plated rod is not only suitable for supporting the use of linear bearings in the automation industry, but also can be applied to many types of guide rods, operating rods, adjusting rods, transmission shafts, pillars, cylinders, cylinders, die-casting machines, injection molding machines, fitness equipment, electronic equipment, electric tools, precision machinery, packaging machinery, printing machinery, woodworking machinery, textile machinery, printing and dyeing machinery, light industry machinery, engineering machinery, mining machinery Automation equipment and other various industrial machinery as well as supporting equipment.

 

Packaging	1. by bundles, each bundle weight under 3 tons, for small outer diameter steel bars, each bundle with 4 - 8 steel strips. 2. after making by bundle, covered with Polyethylene waterproof cloth. 3. make black paints painting on each bar, then make bundles
20 feet container contains dimension	Length under 6000mm
40 feet container contains dimension	Length under 12000mm
By bulk vessel	Freight charge is low by bulk cargo, and large heavy sizes can not be loaded into containers can shipping by bulk cargo

FAQ

1. Who are we?
Our headquarter is located in Shandong, China. Since 2022, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.

2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;

3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.

5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese

6. How can we get your price?
A. We need the following information to quote for you:
1).  Product Name
2).  standard
3).  Material grade (chemical composition)
4).  dimension
5).  amount
6).  Special part drawin