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Q355N C Grade Carbon Steel Plate Hot Rolled Steel Sheet 0.3-3.0mm Thickness for Structural Fabrication

Name: Q355N C Grade Carbon Steel Plate Hot Rolled Steel Sheet 0.3-3.0mm Thickness for Structural Fabrication
Brand: Wuxi Sylaith Special Steel Co., Ltd.
SKU: Q355N C
Price: 20.00 USD
Availability: InStock

Brand Name:	Sylaith
Model Number:	Q355N C
MOQ:	1 ton
Price:	Negotiable
Delivery Time:	7-20 days, depending on the quantity and any special requirements
Payment Terms:	30% T/T Advance + 70% T/T Balance

Detail Information

Product Description

Detail Information

Place of Origin:

China

Certification:

MTC

Product Name:

Carbon Steel Sheet / Plate

Standard:

AISI, ASTM, BS, DIN, GB, JIS

Type:

Hot Rolled Steel Sheet / Coil / Plate

Hardness:

Mid Hard

Surface Treatment:

Coated (smooth Finish)

Skin Pass:

Yes

MOQ:

1 Ton

Processing Service:

Service Welding, Punching, Cutting, Bending, Decoiling, Annealed, Black Annealed

Price Terms:

CIF, CFR, FOB, EX-WORK

Delivery Time:

Fast Delivery In 7 Days Or Up To Order Quantity And Requirements

Packaging Details:

Standard export sea-worthy packing or as customers required

Supply Ability:

1000+Tons/Month

Highlight:

Q355N C Grade Carbon Steel Plate

0.3-3.0mm Thickness Hot Rolled Steel Sheet

Structural Fabrication HSLA Steel Plate

Product Description

Product Name	Q355N C High Strength Carbon Steel Plate / Sheet
Type	Steel Coil / Sheet / Plate
Grade	Q355N C
Standard	AISI, ASTM, BS, DIN, GB, JIS
Material Type	High Strength Low Alloy (HSLA) Steel
Alloy Or Not	Non-Alloy (micro-alloyed)
Thickness	0.3 mm - 3.0 mm
Hardness	Mid Hard
Surface Treatment	Normal Oiled / Slightly Oiled
Skin Pass	Yes
Processing Service	Welding, Punching, Cutting, Bending, Decoiling, Annealed, Black Annealed
Application	Automotive specific steel, structural fabrication, high-strength components

Product Overview

Q355N C High Strength Carbon Steel Plates represent advanced structural steel technology, offering superior mechanical properties, excellent formability, and outstanding weldability. Manufactured from premium raw materials sourced from Jiangsu, China and supplied by Wuxi Sylaith Special Steel Co., Ltd, these hot rolled steel sheets are engineered for demanding applications in automotive, construction, and heavy industry.

Key Applications

Automotive Industry

Chassis components and frame members
Structural reinforcements
Suspension parts
Body-in-white structural elements
Commercial vehicle frames

Structural Fabrication

High-strength building frames
Bridge components
Industrial plant structures
Stadium and arena frameworks
Transmission towers

Heavy Machinery

Excavator arms and buckets
Crane booms and outriggers
Mining equipment
Agricultural machinery frames
Construction equipment

General Fabrication

Complex bent parts
Welded assemblies
Precision components
Load-bearing structures

Manufacturing Process

Step 1: Raw Material Selection

Premium steel from Sylaith is selected with precise chemical composition control. Micro-alloying elements (Nb, V, Ti) are added to achieve high strength without sacrificing formability.

Step 2: Hot Rolling

The steel is heated above recrystallization temperature and rolled to achieve the required thickness (0.3-3.0mm). Controlled rolling parameters ensure uniform grain refinement and consistent mechanical properties.

Step 3: Normalizing (N Condition)

The "N" in Q355N C indicates normalized or normalized rolled delivery condition. This heat treatment process refines grain structure, improves toughness, ensures consistent properties throughout, and eliminates internal stresses.

Step 4: Skin Pass

A light cold rolling pass (skin pass) is applied to improve surface finish, enhance flatness, prevent yield point elongation, and ensure consistent forming behavior.

Step 5: Surface Treatment

The plates receive normal oiled / slightly oiled surface treatment to protect against corrosion during storage and transport, prepare surface for subsequent processing, and maintain bright, clean appearance.

Step 6: Quality Inspection

Every coil/plate undergoes rigorous testing including mechanical property verification (yield, tensile, elongation), dimensional inspection (±1% tolerance), surface quality assessment, and hardness testing (mid hard specification).

Step 7: Certification

Products are certified to multiple international standards: ISO 9001 (Quality Management), JIS (Japanese Industrial Standards), API (American Petroleum Institute), SNI (Indonesian National Standard), CE (European Conformity), GS (German Safety Standard), and KS (Korean Standard).

Frequently Asked Questions

Q1: What does Q355N C mean?

Q = Yield strength (Qu Fu Dian in Chinese)
355 = Minimum yield strength of 355 MPa
N = Normalized or normalized rolled delivery condition
C = Quality grade with guaranteed impact toughness at 0 °C

This makes Q355N C suitable for structural applications requiring high strength and good low-temperature performance.

Q2: What is the difference between Q355N C and regular Q235?

A: Q355N C offers 50% higher yield strength (355 MPa vs 235 MPa) and includes micro-alloying elements (Nb, V, Ti) for improved toughness. It also guarantees impact performance at 0°C, while Q235 has no such guarantee. Q355N C is designed for demanding structural applications where Q235 would be insufficient.

Q3: What thickness range do you offer?

A: We offer 0.3mm to 3.0mm thickness range:

0.3-1.0mm: Light gauge for complex forming
1.0-2.0mm: Medium gauge for general fabrication
2.0-3.0mm: Heavy gauge for structural components

Custom thicknesses within this range are available upon request.

Q4: Is Q355N C suitable for welding?

A: Excellent weldability! Q355N C has low carbon content (≤0.20%) and low carbon equivalent (≤0.45%), allowing welding using standard processes (SMAW, GMAW, FCAW, SAW) without pre-heating for most thicknesses.

Q5: What is "mid hard" hardness?

A: Mid Hard indicates an optimal balance between strength and formability—hard enough for structural integrity yet soft enough for complex bending operations. This makes it ideal for general fabrication where both strength and formability are required.

Q6: What is your delivery time and MOQ?

A: Standard delivery time is 7-20 days after order confirmation, depending on the quantity and any special requirements. Minimum Order Quantity is 1 ton, making it easy for customers to place trial orders or purchase for specific projects.

Q7: Is this steel suitable for bending?

A: Absolutely! Q355N C is specifically designed for complex bending operations, cold forming, stamping, and roll forming. The combination of mid hard hardness and excellent elongation (≥20-22%) ensures reliable, crack-free bending.

Q8: What are the typical automotive applications?

A: Q355N C is widely used in automotive for frame rails, cross members, chassis components, structural reinforcements, suspension parts, and commercial vehicle frames where high strength and good formability are essential.

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Q355N C Grade Carbon Steel Plate Hot Rolled Steel Sheet 0.3-3.0mm Thickness for Structural Fabrication

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Q355N C Grade Carbon Steel Plate Hot Rolled Steel Sheet 0.3-3.0mm Thickness for Structural Fabrication

Brand Name:	Sylaith
Model Number:	Q355N C
MOQ:	1 ton
Price:	Negotiable
Packaging Details:	Standard export sea-worthy packing or as customers required
Payment Terms:	30% T/T Advance + 70% T/T Balance

Detail Information

Product Description

Detail Information

Place of Origin:

China

Brand Name:

Sylaith

Certification:

MTC

Model Number:

Q355N C

Product Name:

Carbon Steel Sheet / Plate

Standard:

AISI, ASTM, BS, DIN, GB, JIS

Type:

Hot Rolled Steel Sheet / Coil / Plate

Hardness:

Mid Hard

Surface Treatment:

Coated (smooth Finish)

Skin Pass:

Yes

MOQ:

1 Ton

Processing Service:

Service Welding, Punching, Cutting, Bending, Decoiling, Annealed, Black Annealed

Price Terms:

CIF, CFR, FOB, EX-WORK

Delivery Time:

Fast Delivery In 7 Days Or Up To Order Quantity And Requirements

Minimum Order Quantity:

1 ton

Price:

Negotiable

Packaging Details:

Standard export sea-worthy packing or as customers required

Delivery Time:

7-20 days, depending on the quantity and any special requirements

Payment Terms:

30% T/T Advance + 70% T/T Balance

Supply Ability:

1000+Tons/Month

Highlight:

Q355N C Grade Carbon Steel Plate

0.3-3.0mm Thickness Hot Rolled Steel Sheet

Structural Fabrication HSLA Steel Plate

Product Description

Product Name	Q355N C High Strength Carbon Steel Plate / Sheet
Type	Steel Coil / Sheet / Plate
Grade	Q355N C
Standard	AISI, ASTM, BS, DIN, GB, JIS
Material Type	High Strength Low Alloy (HSLA) Steel
Alloy Or Not	Non-Alloy (micro-alloyed)
Thickness	0.3 mm - 3.0 mm
Hardness	Mid Hard
Surface Treatment	Normal Oiled / Slightly Oiled
Skin Pass	Yes
Processing Service	Welding, Punching, Cutting, Bending, Decoiling, Annealed, Black Annealed
Application	Automotive specific steel, structural fabrication, high-strength components

Product Overview

Key Applications

Automotive Industry

Chassis components and frame members
Structural reinforcements
Suspension parts
Body-in-white structural elements
Commercial vehicle frames

Structural Fabrication

High-strength building frames
Bridge components
Industrial plant structures
Stadium and arena frameworks
Transmission towers

Heavy Machinery

Excavator arms and buckets
Crane booms and outriggers
Mining equipment
Agricultural machinery frames
Construction equipment

General Fabrication

Complex bent parts
Welded assemblies
Precision components
Load-bearing structures

Manufacturing Process

Step 1: Raw Material Selection

Premium steel from Sylaith is selected with precise chemical composition control. Micro-alloying elements (Nb, V, Ti) are added to achieve high strength without sacrificing formability.

Step 2: Hot Rolling

Step 3: Normalizing (N Condition)

Step 4: Skin Pass

A light cold rolling pass (skin pass) is applied to improve surface finish, enhance flatness, prevent yield point elongation, and ensure consistent forming behavior.

Step 5: Surface Treatment

Step 6: Quality Inspection

Step 7: Certification

Frequently Asked Questions

Q1: What does Q355N C mean?

Q = Yield strength (Qu Fu Dian in Chinese)
355 = Minimum yield strength of 355 MPa
N = Normalized or normalized rolled delivery condition
C = Quality grade with guaranteed impact toughness at 0 °C

This makes Q355N C suitable for structural applications requiring high strength and good low-temperature performance.

Q2: What is the difference between Q355N C and regular Q235?

Q3: What thickness range do you offer?

A: We offer 0.3mm to 3.0mm thickness range:

0.3-1.0mm: Light gauge for complex forming
1.0-2.0mm: Medium gauge for general fabrication
2.0-3.0mm: Heavy gauge for structural components

Custom thicknesses within this range are available upon request.

Q4: Is Q355N C suitable for welding?

Q5: What is "mid hard" hardness?

Q6: What is your delivery time and MOQ?

Q7: Is this steel suitable for bending?

Q8: What are the typical automotive applications?

Tags:

Q235B Q355 Hot Rolled Carbon Steel Plate Medium-Thickness Embossed Cutting Bending Punching Steel Plate for Engineering Projects

Get Best Price

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