Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
News
SHANGHAI UNITE STEEL
Home ProductsStainless Steel Bar

ASTM 440A 440B 440C 440F Stainless Steel Bar For Small Dental Applications

China SHANGHAI UNITE STEEL certification
China SHANGHAI UNITE STEEL certification
I'm Online Chat Now

ASTM 440A 440B 440C 440F Stainless Steel Bar For Small Dental Applications

large.img.alt
small.img.alt small.img.alt

Large Image :  ASTM 440A 440B 440C 440F Stainless Steel Bar For Small Dental Applications

Product Details:
Place of Origin: MAINLAND CHINA
Brand Name: UST
Certification: ISO 9001:2008
Model Number: ASTM 440A 440B 440C 440F
Payment & Shipping Terms:
Minimum Order Quantity: 1 Metric ton
Price: USD 1250-3500 / Metric Ton
Packaging Details: In standard export packing and seaworthy material with rectangular shape bundle, covered with tarpaulin, in ontainers or in bulk, or upon request
Delivery Time: 15-35 days
Payment Terms: L/C, T/T, D/A, D/P
Supply Ability: 1000 Metric Tons per Month
Detailed Product Description
Matrial: Stainless Steel Standard: GB, ASTM, DIN,JIS
Grade: 440A / 440B / 440C / 440F Diameter: 4-800mm
Length: Any Length Below 10 Meters Shape: Round Bar
Techniques: Cold Drawn; Hot Rolled; Forged Surface: Black, Bright, Polished, Peeled, Or Upon Request
Ultrasonic Test: 100% UT Passed Processing: Annealed Or Quenched And Tempered Provided
End: Beveled, Plain End As Required Quality Inspection: SGS, BV Etc.
Service: Cutting Service And 3rd Party Inspection Is Provided
High Light:

stainless round bar

,

stainless steel round bar

INTRODUCTION

 

Often referred to as “razor-blade steel” due to its frequent use in the manufacture of razors and cutlery, grade 440 stainless steel provides high strength and moderate corrosion resistance. Extremely versatile, it’s used in a wide range of industries to create specialized, small-scale products and is available in various types: 440A, 440B, 440C, and 440F.

 

COMMON APPLICATIONS

 

Besides being used for cutlery and razorblades, 440 stainless steel is also used for small applications such as dental and surgical instruments. Its high heat and corrosion resistance make it ideal for engine parts like rolling bearings and valve seats, and with superior hardness and abrasion resistance, it’s particularly well suited to manufacturing precision pivot pins and rollers.

 

Steel Grade 440 Application Mentioned above
Shape Round Bar Standard GB, ASTM, DIN,JIS
Dimension Φ4-800 mm; length below 10m Surface Black, Bright, Polished, Peeled
Technique Cold drawn; Hot rolled; Forged Ultrasonic Test 100% UT Passed

 

DELIVERY CONDITIONS

 

  Diameter (mm)
Cold drawn 4-60
Peeled 30-100
Grinded 4-600
Turned 130-800
Hot Rolled 20-280
Hot Forged 130-800

 

EQUIVALENT GRADES

  • JIS G4303: SUS440A/ SUS440B/ SUS440C/ SUS440F
  • ASTM/ASME: UNS S44002/UNS S44003/ UNS S44004/ UNS S44020
  • EURONORM: X105CrMo17
  • DIN: 1.4125

 

CHEMICAL COMPOSITION (%)

The chemical compositions of the various types of 440 stainless steel are as follows, with carbon content being the only major difference:

 

  C Mn Si P S Cr Mo
440A

0.60

0.75

1.00

1.00

0.040

0.030

16.00

18.00

0.75

440B

0.75

0.95

1.00

1.00

0.040

0.030

16.00

18.00

0.75

440C

0.90

1.20

1.00

1.00

0.04

0.030

 

16.00

18.00

 

0.75

440F

0.95

1.20

1.25

1.00


0.06


0.150

 

16.00

18.00

/

 

Machinability and Formability

Through the use of heat treating and quenching, grade 440 stainless steel can be both annealed and hardened. In its annealed form, this material exhibits good machinability, but its high carbon content — and, therefore, its high hardness — can make it difficult to work with. Because its high sulfur content makes it easily machinable, type 440F is ideal for applications requiring extensive machining.

 

Basic Properties of 440 Stainless Steel

  • Corrosion resistance — All types of grade 440 stainless steel have a high corrosion resistance. Therefore, grade 440 is ideal for use in tempered, passivated, and hardened conditions.
  • Heat resistance — Grade 440 stainless steel has excellent heat resistance and should not be used at temperatures below a set tempering temperature; over-tempering can result in a loss of mechanical properties.
  • Heat treatability — This versatile material can be annealed at about 850-900 °C prior to slow furnace cooling at about 600 °C and air cooling. It can also be heated at 1010-1065 °C then quenched in air or oil for hardening.
  • Weldability — During welding, grade 440 stainless steel is preheated at 250 °C, followed by full annealing.
  • Machinability — 440 stainless steel can be easily machined in an annealed state.

 

Comparing Types of 440 Stainless Steel

 

Stainless Steel 440A

  • Moderate corrosion resistance
  • Superior ability to maintain hardness
  • Excellent wear resistance
  • Not ideal for high-temperature applications

Stainless Steel 440B

  • Superior ability to maintain hardness
  • Excellent machinability
  • Not ideal for welding, as it tends to air harden

Stainless Steel 440C

  • High strength
  • Moderate corrosion resistance (similar to that of grade 304)
  • Good wear resistance and hardness properties
  • Can attain highest strength after heat treatment compared to other stainless alloys
  • Not ideal for use in applications with temperatures above tempering temperature due to resultant loss of mechanical properties

Stainless Steel 440F

  • High hardness properties
  • Superior corrosion resistance
  • Allows for heat treating and free machining
  • Ideal for use in applications requiring high hardness, non-galling, and non-seizing properties
  • Not ideal for applications involving gas or liquid under pressure

 

POSSIBLE ALTERNATIVE GRADES TO 440C

 

Grade Reason it may be chosen instead of 440C
440A/B Slightly softer and more corrosion resistant grade needed
440F High machinability required, with same hardness and hardenability as 440C
420 Lower strength and hardness needed than any of the 440 grades
416 Higher machinability required, and the much lower hardness and strength is still adequate

 

 

ASTM 440A 440B 440C 440F Stainless Steel Bar For Small Dental Applications 0

What we can offer?

-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

-Machining and heat treatment are available.

-Also, we advise you in choosing the right materials.

 

Shape Available

  • Solid round bar
  • Flat bar
  • Square bar
  • Hexagon bar
  • Block
  • Plate
  • Sheet
  • Wire rod
  • Strip

 

Our Advantages

  • High mechanical property and quenching, enable the surface share equal hardness after deal with it
  • Good polishing and low roughness
  • Making the heat-treatment to harden condition before using it
  • Competitive price
  • Fast production lead-time
  • All the material are inspected with 3 times to meet the highly standards
  • Pure steel quality & stable quality to be guarantee
 

OUR AVAILABLE STAINLESS STEEL PRODUCTS ARE AS BELOW

ASTM 440A 440B 440C 440F Stainless Steel Bar For Small Dental Applications 1

 

PAYMENT AND SHIPPING

 

1. Both T/T and L/C will be acceptable

2. Trade Terms: FOB, CIF, CFR

3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties

4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples

 

COMPANY INFORMATION

 

Shanghai Unite Steel Trading Co., Ltd

We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.

What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!

 

FAQ

 

Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.

Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.

Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material doesn't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.

Q: What is the payment term?
A: T/T or L/C.

Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.

 

CONTACT US

 

We are happy to answer your questions and make you an offer for these and other materials. Contact us now for more information.

 

Your Contact Person

Ms Chilli Ho

Phone/Wechat/Whatsapp +86-181-0187-5575

Skype: chilli.ho@outlook.com

Email: chilli.ho@shunitesteel.com

Contact Details
SHANGHAI UNITE STEEL

Contact Person: Neya

Tel: +8615261689453

Send your inquiry directly to us (0 / 3000)