AISI/SAE 5160 Carbon Steel Bar
5160 steel bar is made of a medium-carbon alloy steel whose specific components include carbon, chromium, manganese, silicon, phosphorus and other elements. In addition, 5160 steel also contains a small amount of chromium for improved hardenability.
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Product Description

AISI/SAE 5160 Carbon Steel Bar Description

5160 alloy steel is a high carbon spring steel with a small amount of chromium added in addition to carbon. The addition of chromium can improve the hardenability of steel. 5160 steel has excellent toughness, ductility and fatigue resistance. Although various properties such as wear resistance are excellent, it is famous for its excellent toughness. 5160 steel bars are used in the vehicle and tractor industry to make leaf springs with heavy loads and large stresses and coil springs with larger diameters.


Product Parameters

Product Name

AISI/SAE 5160 Carbon Steel Bar

Standard

EN/DIN/JIS/ASTM/BS/ASME/AISI, etc.

Common Round Bar Specifications

3.0-50.8 mmOver 50.8-300mm

Flat Steel Common Specifications

6.35x12.7mm, 6.35x25.4mm, 12.7x25.4mm

Hexagon Bar Common Specifications

AF5.8mm-17mm

Square Bar Common Specifications

AF2mm-14mm, AF6.35mm9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm

Length

1-6meters, Size Accept Custom

Diameter(mm)

Hot Rolling Round Bar

25-600

Cold Rolling Square Bar

6-50.8

Hot Rolling Square Bar

21-54

Cold Rolling Hexagon Bar

9.5-65

Cold Rolling Round bar

6-101.6

Forged Rebar

200-1000

Surface Process

Bright, Polished, Black

Other Services

Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

 

Chemical Composition

Standard

Grade

C

Si

Mn

Cr

V

P ≤

S ≤

DIN  17221

60SiCr7

0.57-0.65

1.50-1.80

0.70-1.00

0.20-0.40

 

0.030

0.030

55Cr3

0.52-059

≤ 0.40

0.70-1.00

0.70-1.00

 

0.025

0.025

60Cr3

0.56-0.64

0.17-0.37

0.70-1.00

0.70-1.00

 

0.025

0.025

50CrV4

0.47-0.55

0.15-0.40

0.70-1.00

0.70-1.10

0.10-0.20

0.030

0.030

JIS G4801

SUP6

0.55-0.65

1.50-1.80

0.70-1.00

—

 

0.035

0.035

SUP7

0.55-0.65

1.80-2.20

0.70-1.00

—

 

0.035

0.035

SUP9

0.52-0.60

0.15-0.35

0.65-0.95

0.65-0.95

 

0.030

0.030

SUP9A

0.56-0.64

0.15-0.35

0.70-1.00

0.70-1.00

 

0.030

0.030

SUP10

0.47-0.55

0.15-0.35

0.65-0.95

0.80-1.10

0.15-0.25

0.030

0.030

SAE J1268

9260/H

0.55-0.65

0.70-1.20

0.65-1.10

≤ 0.2

 

0.040

0.030

5155

0.50-0.60

0.15-0.35

0.65-1.10

0.60-1.00

 

0.040

0.030

5160/H

0.55-0.65

0.15-0.35

0.65-1.10

0.60-1.00

 

0.040

0.030

6150

0.47-0.54

0.15-0.35

0.60-1.00

0.75-1.20

≤ 0.15

0.040

0.030

 

Mechanical Properties

Standard

Heat Treatment

Mechanical Property [≥]

GB

SAE

JIS

DIN

Quenching Temprature °C

Quenchant

Temper Stressing °C

Tensile Strength Rm/[N/mm2]

Yield Strength ReL/[N/mm2]

HBW ≤

65Mn

1066

-

-

830

Oil

540

980

785

302

60Si2Mn

9260

SUP6

60Si7

870

480

1275

1180

321

60Si2MnA

9260

SUP7

60Si7

870

440

1570

1375

321

55CrMnA

5155

SUP9

55Cr3

830-860

460-510

1225

1080 (Rpo 2)

321

60CrMnA

5160/h

SUP9A

-

830-860

460-520

1225

1080 (Rpo 2)

321

50CrVA

6150

SUP10

51CrV4

850

500

1275

1130

321

 

Scope of Application

5160 steel is an ideal spring steel. Its high strength is often used in applications with small cross-sections under significant stress, such as springs, fasteners, and leaf springs in automotive suspensions.

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Product Application

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Factory Display

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FAQ

Q1: What types of steel products does your company primarily manufacture and supply?
A: We are a direct manufacturer specializing in carbon steel, hot-dip galvanized steel, PPGI (pre-painted galvanized iron), and stainless steel (grades 201, 304, and 316) in the form of sheets, coils, pipes, and various structural profiles, along with complementary steel structural components. Our products serve a wide range of industries, including infrastructure, photovoltaics, machinery manufacturing, chemicals, and new energy.

 

Q2: Do you support customization regarding material grades, thicknesses, and dimensions?
A: Customization is available across our entire product range. For carbon steel, galvanized steel, and stainless steel, we can adjust thickness, width, and cut-to-length dimensions according to GB, ASTM, or EN standards. Various profiles can be cut and bent based on customer drawings, and special steel grades can be produced through customized scheduling.

 

Q3: What is the difference between galvanized steel and color-coated (PPGI) steel, and how should I choose for my project?
A: Hot-dip galvanized steel features a pure zinc anti-rust layer; it is cost-effective and impact-resistant, making it ideal for mounting brackets, guardrails, and load-bearing factory structures (and it can be painted over). PPGI color-coated steel uses a galvanized base, offering both rust protection and aesthetic appeal with a wide range of colors; it is commonly used for factory roofing, wall cladding, and energy storage equipment casings. We recommend thicker galvanized coatings for projects in rainy coastal areas, color-coated sheets for outdoor projects requiring visual appeal, and weather-resistant fluorocarbon (PVDF) coatings for high-temperature desert environments.

 

Q4: Does the factory keep stock on hand, and what is the minimum order quantity (MOQ)?
A: We operate our own standardized, zoned warehouse with a capacity of over 10,000 tons, maintaining ample stock of carbon steel, galvanized steel, and stainless steel. The MOQ for standard specifications is 1 ton, though we also accept sample orders as small as a few dozen kilograms. There is no upper limit for large-scale projects, and we support mixed-load shipments combining different steel products in a single container.

 

Q5: What are the lead times for stock items versus customized products?
A: Standard stock items take 3–7 days for processing, packaging, and container loading. Simple cutting and bending orders take 7–10 days. Orders requiring mold creation or special steel customization take 15–30 days; exact delivery dates are confirmed based on the customer's specific order specifications.

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