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AISI/SAE 4340 Carbon Steel Bar


AISI 4340 alloy steel is a heat treatable low alloy steel containing chromium, nickel and molybdenum. It has high toughness and high strength under heat treatment conditions.


Category:

Keywords:

CERTIFICATE
ISO/EC 17021:2011
GB/T24001-2004
GB/T 24001-2016
Quality Management System Certificate

Description

AISI/SAE 4340 Carbon Steel Bar Description

AISI 4340 alloy steel is a heat treatable low alloy steel containing chromium, nickel and molybdenum. It has high toughness and high strength under heat treatment conditions.


Product Parameters

Product Name

AISI/SAE 4340 Carbon Steel Bar

Standard

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

Common Round Bar Specifications

3.0-50.8 mm, Over 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, AF6.35mm, 9.5mm, 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

1025

C

Si

Mn

S

P

Cr

Ni

Cu

0.62-0.70

0.17-0.37

0.90-1.20

≤ 0.035

≤ 0.035

≤0.25

≤0.25

≤0.25

 

Mechanical Properties

1025

Tensile Strength

Yield Strength

Elongation

Reduction of Area
Meat

Hardness

(Mpa)

(Mpa)

(%)

(%)min

Hot Rolled

Cold Rolled Soft

Cold Rolled Hard

Heat Treatment

825-925

520-690

14-21.5

10

240-270HB

190-220HB

300-340HB

38-60HRC

 

Scope of Application

SAE 1025 is a low-carbon steel with excellent corrosion resistance, heat resistance and mechanical properties. It can be used in a wide range of applications from auto parts to building materials.

America

 Japan 

Germany

Britain

 

France

Italy

Spain

Switzerland

China

AISI/SAE

JIS

W‐nr.

DIN

BS

EN

AFNOR

UNI

UNE

SS

GB

A570.36

STKM 12A

1.0038

RSt.37‐2

4360

E 24‐2

1311

15

-

STKM 12C

-

-

40 C

-

Ne

-

-

-

-

1015

1.0401

C15

080M15

CC12

C15, C16

F.111

1350

15

1020

1.0402

C22

050A20

2C

CC20

C20, C21

F.112

1450

20

1213

SUM22

1.0715

9SMn28

230M07

1A

S250

CF9SMn28

F.2111

1912

Y15

11SMn28

12L13

SUM22L

1.0718

9SMnPb28

S250Pb

CF9SMnPb28

11SMnPb28

1914

1.0722

10SPb20

10PbF2

CF10Pb20

10SPb20

1215

1.0736

9SMn36

240M07

1B

S300

CF9SMn36

12SMn35

Y13

12L14

1.0737

9SMnPb36

S300PB

CF9SMnPb36

12SMnP35

1926

1015

S15C

1.1141

Ck15

080M15

32C

XC12

C16

C15K

1370

15

1025

S25C

1.1158

Ck25

25

A572-60

1.890

StE380

4360 55

FeE390KG

2145

1035

1.0501

C35

060A35

CC35

C35

F.113

1550

35

1045

1.0503

C45

080M46

CC45

C45

F.114

1650

45

1140

1.0726

35S20

212M36

8M

35MF4

F210G

1957

1039

1.1157

40Mn4

150M36

15

35M5

40Mn

1335

SMn438(H)

1.1167

36Mn5

40M5

36Mn5

2120

35Mn2

1330

SCMn1

1.1170

28Mn6

150M28

14A

20M5

C28Mn

30Mn

1035

S35C

1.1183

Cf35

060A35

XC38TS

C36

1572

35Mn

1045

S45C

1.1191

Ck45

080M46

XC42

C45

C45K

1672

Ck45

1050

S50C

1.1213

Cf53

060A52

XC48TS

C53

1674

50

1055

1.0535

C55

070M55

9

C55

1655

55

1060

1.0601

C60

080A62

43D

CC55

C60

60

1055

S55C

1.1203

Ck55

070M55

XC55

C50

C55K

55

1060

S58C

1.1221

Ck60

080A62

43D

XC60

C60

1678

60Mn

1095

1.1274

Ck101

060A96

XC100

F.5117

1870

W1

SK3

1.1545

C105W1

BW1A

Y105

C36KU

F.5118

1880

W210

SUP4

1.1545

C105W1

BW2

Y120

C120KU

F.515

2900

 

Packing and delivery

The main export products include steel products such as steel plates/coils/tubes/rods. The management has been engaged in the steel industry for more than 20 years, the management team is experienced and has established solid business relationships with customers and factories. Lingyue's annual sales volume exceeds 10 million tons, and it provides customized processing services for a variety of products.

 

Factory Appearance

 

Packing and shipping

The company mainly exports to more than 60 countries including Australia Peru,Colombia, Brazil, Bangladesh, India, South Korea, Pakistan, Italy, Turkey, etc. The main export products include steel plate/coils/pipes/bars and other steel products. 

Customer visit

The management has been engaged in steel industry for more than 20 years, full of experience for managing team and strong business relations with our valuable customers and factories.

Application areas

 lingyue's annual sales more than 10 million tons, and provides a variety of product customized processing services. Our company always sticks to the following business principles: High Quality Products to win the market; Competitive Price to attract customers; Excellent Service to gain reputation.

Certificates

CERTIFICATE
ISO/EC 17021:2011
GB/T24001-2004
GB/T 24001-2016

Factory Workshop

Factory Workshop
Factory Workshop
Factory Workshop
Factory Workshop
Factory Workshop
Factory Workshop
Factory Workshop
Factory Workshop

Shipping & Packaging

Shipping & Packaging
Shipping & Packaging
Shipping & Packaging
Shipping & Packaging
Shipping & Packaging
Shipping & Packaging

Application

Application
Application
Application
Application
Application
Application

Customer Feedback

Client Feedback
Client Feedback
Client Feedback

FAQ

...

Q

Are you a stock manufacturer or a trading company?


A

We are a ​stock manufacturer with our own production facilities and inventory. This means: ​Direct Quality Control We oversee the entire production process, ensuring strict quality standards from raw materials to finished products. ​Faster Delivery With ready stock and streamlined production, we guarantee shorter lead times compared to trading intermediaries. ​Cost-Effective Pricing By eliminating third-party margins, we offer competitive pricing without compromising on quality. ​Customization Flexibility While we maintain standard inventory, we also support tailored solutions for bulk orders to meet specific client requirements. ​Transparent Communication As a direct manufacturer, we provide clear technical support and real-time updates on order status. Interested in learning more? Contact us to discuss your needs or request a product catalog!

Q

How do I get the price information?


A

For accurate and tailored pricing, please contact us via ​email or the inquiry form on our website. Here’s why we prioritize direct communication: ​Customized Quotes As a stock manufacturer, we offer volume-based discounts and adjust pricing based on your order quantity, material specifications, or customization needs. ​Real-Time Updates Prices may fluctuate due to raw material costs or seasonal promotions. Direct contact ensures you receive the latest offers. ​Expert Support Our team will provide detailed technical guidance alongside pricing to help you select the most cost-effective solution. We typically respond within ​1 business hour!

Q

Do you provide customised product service?


A

Absolutely. As a Tier-1 metal solutions partner, Shandong Maike Metal Materials Co., Ltd. specializes in delivering precision-engineered products tailored to your unique technical, dimensional, and compliance requirements. From prototype development to bulk production, we turn complex specifications into reality.

Q

What payment methods do you accept?


A

We accept secure and flexible payment options to facilitate global transactions, including: ​TT (Telegraphic Transfer) The most common method for international trade, ensuring fast and direct bank-to-bank transfers. ​Other Methods For specific regional or customized needs, please contact our finance team.

Q

What is the minimum order quantity (MOQ)?


A

Our standard ​minimum order quantity is 1 kilogram. This flexible policy is designed to: ​Enable Sample Testing New clients can order small quantities to evaluate product quality before committing to bulk purchases. ​Support Flexible Scalability Start with 1kg for urgent needs or niche projects, and scale up seamlessly to tons for long-term partnerships. ​No Hidden Constraints The 1kg MOQ applies to most stocked items—no mandatory volume tiers or bundling requirements. ​Quality Consistency Whether you order 1kg or 10 tons, we ensure the same certified quality standards. Why such a low MOQ? As a stock manufacturer, we prioritize accessibility and trust-building. Our in-house inventory allows us to serve both startups and large enterprises without compromising efficiency.

Q

Do you provide samples? Is it free or extra charge?


A

Yes, we ​provide samples free of charge to help you verify product quality and compatibility. Here’s what you need to know: ​Zero Sample Fees Most standard items are available for free sampling (1-2 units or small quantities). ​Shipping Flexibility Free Shipping: Available for bulk order commitments. Paid Shipping: Clients cover express freight costs for non-bulk trial orders (we use discounted carrier rates). ​Custom Sample Support If you require tailored specifications, our engineers will work with you to develop samples at minimal cost. Why do we offer free samples? As a trusted stock manufacturer, we prioritize transparency and long-term partnerships. Testing our samples allows you to: ✅ Confirm material quality and performance. ✅ Reduce procurement risks before large orders. ✅ Streamline approvals for your end clients.

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