QN1803 Stainless Steel

Martensitic Stainless Steel 410

Overview: QN1803 Stainless Steel

QN1803 Stainless Steel is part of the QN series developed by Qingtuo Group. This series includes QN1701, QN1803, QN1804L, QN1906Mo, and QN2109Mo. QN1803 is a high-strength, nitrogen-containing austenitic stainless steel designed to be a cost-effective alternative to traditional 304 stainless steel. It offers superior corrosion resistance, high strength, and excellent wear resistance. The innovative high-nitrogen, low-nickel design reduces alloy costs while maintaining high performance, making it suitable for a wide range of applications including construction, decoration, kitchen and sanitary products, and marine farming. QN1803 complies with national standards and the Chinese Steel Association’s group standards.

What Is QN1803 Stainless Steel

QN1803 Stainless Steel Features

High Corrosion Resistance: Superior resistance in environments containing sulfuric and hydrochloric acids.

High Strength: Tensile strength of 747 MPa and yield strength of 432 MPa ensure durability.

Excellent Wear Resistance: Ideal for components subjected to frequent friction, like sliding rails and hinges.

Ease of Processing and Welding: Suitable for a wide range of manufacturing applications.

Cost-Effective Design: High-nitrogen, low-nickel composition reduces costs while maintaining performance.

Antibacterial Properties: Copper inclusion provides significant antibacterial effects, ideal for water storage and kitchen products.

Standards Compliance: Meets national and Chinese Steel Association’s group standards.

With these features, 1803 is ideal for applications in construction, decoration, kitchen and sanitary products, and marine farming.

* See the tables below for detailed comparison parameters with other stainless steels.

  • Construction (roofs, walls)
  • Stainless steel purlins and gutters
  • Decorative welded pipes
  • Drainage and fire pipes
  • Sliding rails and hinges
  • Hardware doors
  • Elevator panels
  • Water storage tanks
  • Kitchen and sanitary products
  • Cookware
  • Refrigerated containers
  • Livestock farming equipment
  • Gas pipelines
  • Desulfurization towers

QN1803 Stainless Steel Application

Performance of QN Stainless Steel

Stainless Steel Grade QN1803 304
Chemical Composition(%)
Standard
T/CISA 022-2019
ASTM A240
C
≤0.10
0.04
Si
≤1.00
0.40
Mn
4.00-8.00
1.05
P
≤0.050
0.035
S
≤0.005
0.0021
Cr
17.50~19.50
18.11
Ni
2.00~3.50
8.02
Mo
≤0.30
0.02
Cu
1.00-3.50
0.12
N
0.20-0.30
0.045
Nb+Ti
/
/
PREN
>19.0
18.51

*All the above data is sourced from the official product manual of Tsingshan Group.

Physical Properties of 1803 (as compared to 304)

Stainless Steel Grade QN1803 304
Physical Properties
Density (g/cm³)
7.83
7.93
Specific Heat Capacity (KJ/(kg*K))
0.67
0.50
Thermal Conductivity (W/(m*K))
20.7
16.3
Thermal Diffusivity (mm²/s)
3.96
4.11
Thermal Expansion Coefficient (10⁶/K)
16.8
17.2
Electrical Resistivity (Ω*mm²/m)
0.72
0.73
Elastic Modulus (kN/mm²)
196
193

*All the above data is sourced from the official product manual of Tsingshan Group.

Mechanical Properties of 1803 (as compared to 304)

Stainless Steel Grade QN1803 304
Mechanical Properties
Thickness (mm)
0.50
0.50
Tensile Strength (Rm) (MPa)
747
670
Yield Strength (Rp₀.₂) (MPa)
432
290
Elongation (%)
51.6
58.5
Hardness (HV)
230
165
180° Cold Bend
Intact
Intact

*All the above data is sourced from the official product manual of Tsingshan Group.

Pitting Resistance Analysis of QN Stainless Steels vs. Comparable Grades

*All the above data is sourced from the official product manual of Tsingshan Group.

Comparative Pitting Rates: QN Stainless Steels vs. Equivalent Grades

*All the above data is sourced from the official product manual of Tsingshan Group.

Corrosion Rate Analysis in 5% H₂SO₄: QN Stainless Steels vs. Comparable Grades

*All the above data is sourced from the official product manual of Tsingshan Group.

HCl Corrosion Rate Comparison: QN Stainless Steels vs. Comparable Grades

*All the above data is sourced from the official product manual of Tsingshan Group.

Cost Efficiency of QN1803 Stainless Steel

*All the above data is sourced from the official product manual of Tsingshan Group.

Why Purchase QN1803 Stainless Steel from GHT

Reliable Stainless Steel Coil Inventory Assurance

Ever been in a bind due to an urgent need for substantial quantities of stainless steel coils, only to find your supplier’s inventory lacking? Such situations can disrupt your workflow and plans.

Our Advantage: With us, that scenario is a thing of the past.  Our inventory is consistently stocked to the brim, ensuring rapid fulfillment of even the largest orders, seamlessly aligning with your business timeline.

Tailored Stainless Steel Material Processing

You might have encountered situations where custom processing is needed, but finding the right supplier to meet your specific demands can be a challenge.

Our Advantage: Our robust processing capabilities are designed to cater to all your customization needs. Be it dimension adjustments, stainless steel finish surface treatments, or other specific requirements, we offer professional one-stop services.

Competitive Stainless Steel Pricing

When searching for stainless steel coil suppliers, pricing is often a key consideration. You might have had to compromise on your ideal supplier due to high costs.

Our Advantage: Through effective cost control and optimized procurement processes, we ensure competitive pricing. This means choosing us not only gets you high-quality products but also services that offer great value for money.

Varied Inventory Stainless Steel Coil Specifications

The quest for stainless steel coils with precise specifications can often lead to dead ends. Finding a supplier who understands and meets these unique requirements is crucial.

Our Advantage: Our inventory is a testament to diversity, encompassing a variety of materials, thicknesses, and widths. We pride ourselves on being able to meet your specific project needs with pinpoint accuracy.

Precision Stainless Steel Shearing Services

Accurate shearing is crucial for the use of stainless steel coils, but not all suppliers can offer such precision services.

Our Advantage: Our shearing services are both professional and efficient, ensuring precise cuts as per your requirements, guaranteeing that the products meet your exact specifications.”

Looking For QN Stainless Steel Supplier

Send us a message to discuss your QN stainless steel needs. We always reply within 24 hours.

How To Pack QN Stainless Steel Sheet & Coil

In GHT, all of our stainless steel coils are packaged as per international standard to prevent any possible damage or loss. By default, for quantity less than 1 whole compete coil (our MOQ is 5 tons), we will use woven plastic bag to cover SS coils and then fix them upon wooden pallet for further protection. We can also package the SS coils as per your special requirement, though this can incur extra cost.

In GHT, all of our stainless steel sheets are packaged as per international standard to prevent any possible damage or loss. By default, we will use brown paper to cover SS sheets and then bundle them together onto wooden pallets. At times, upon some customers’ requests, we will also apply reinforced package with extra metal straps fixed on the four corners, though this can incur extra cost. For enhanced customer experience, we also accept customized package as per your requests.

QN1803 Stainless Steel FAQs

Certainly, we tailor QN stainless steel according to your specific requirements, ensuring that the thickness, width, and physical properties meet your needs.

For trial orders, we offer expedited delivery within one week, while regular orders typically range from 7 to 30 days.

Our QN products undergo thorough inspections throughout the manufacturing, cutting, and packaging processes to ensure the highest quality. Additionally, we provide a QN1803 mill test certificate for quality assurance.

Yes, we offer QN samples for quality evaluation. Samples are provided free of charge; you are only responsible for covering the shipping costs.

Choosing a supplier involves several steps:
1. Research reputable suppliers online.
2. Engage with suppliers to discuss specifications and request samples.
3. Assess credibility based on credentials and customer feedback.
4. Compare quotations and verify quality assurance measures.
5. Negotiate terms, finalize the order, and arrange shipping.
6. Upon receipt, inspect the shipment for quality and accuracy.

1803 stainless steel is particularly beneficial in industries such as construction, kitchen and sanitary products, and industrial settings requiring high corrosion resistance.

QN1803 offers higher strength, better wear resistance, and superior corrosion resistance, especially in acidic environments. Its cost-effective design also makes it a preferred choice for many applications.

Yes, QN stainless steel is designed with environmental considerations in mind. Its durability and corrosion resistance minimize the need for frequent replacements, reducing waste and resource consumption. Additionally, it complies with national and international environmental standards.

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1802 World Expo Financial Center, 23 Dawn Road, Chancheng District, Foshan City, Guangdong Province, China

Tel:+86 757 83078795 

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Email: info@ghtsteel.com

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