Introduction

The alloying elements enhance the mechanical properties of the steel, such as strength, hardness, toughness, wear resistance, and corrosion resistance.

Alloy Steel Plate Standard Size Chart

Thickness (mm)	Width (mm)	Length (mm)	Remarks
6 - 10	1500 - 2500	6000 - 12000	Thin plates, suitable for light structures
10 - 20	1500 - 2500	6000 - 12000	Medium plates, for general machinery
20 - 50	1500 - 2500	6000 - 12000	Thick plates, for heavy equipment
50 - 100	1500 - 2500	6000 - 12000	Extra-thick plates, for pressure vessels, bridges
100 - 200	1500 - 2500	6000 - 12000	Ultra-thick plates, for special heavy structures
Special requirements for size can be provided with customized services.

International Comparison and Applications of Alloy Steel Plate Grades

Material Classification	China (GB)	USA (ASTM)	Japan (JIS)	Europe (EN)	Applications
High-Strength Low-Alloy Steel	Q345, Q390	A572 Gr.50	SM490, SM570	S355JR, S355J2	Heavy structures, engineering, construction
Weathering Steel	Q355NH	A588	SMA400AW	S355J0W	Outdoor structures, bridges
Shipbuilding Steel	AH36, DH36	A131 Gr.AH36	KA36, KD36	EH36	Ship hulls, marine structures
Pressure Vessel Steel	Q345R, Q370R	A516 Gr.60	SPV355, SPV450	P355GH, P460NH	Boilers, storage tanks, pressure vessels
Bridge Steel	Q345Q, Q420Q	A709 Gr.50	SM520C, SM570C	S355J2, S420J2	Bridges, heavy-load structures
Wear-Resistant Steel	NM360, NM400 NM450,NM500	AR360,AR400, AR450,AR500	JFE-EH360	Hardox 400, Hardox 450, Hardox 500	Mining equipment, construction machinery
High-Strength Structural Steel	Q550, Q690	A514	HT780, HT950	S690Q, S890Q	Heavy machinery, high-load structures
If you have other material requirements, please contact us for inquiry.

Product Processing Services

Processing Service	Description	Applications
Cutting	- Laser Cutting: High precision for complex shapes.	Aerospace, automotive, machinery
	- Plasma Cutting: Fast cutting for medium-thick plates.	Construction, energy
	- Flame Cutting: Cost-effective for thick plates.	Heavy equipment, shipbuilding
Forming	- Bending: Using press brakes to achieve desired angles.	Automotive, construction
	- Rolling: Forming plates into cylindrical or curved shapes.	Pipes, tanks, containers
	- Stamping: Using molds to create specific shapes.	Automotive, electronics
Welding	- Arc Welding: Suitable for most alloy plates.	General manufacturing
	- Gas-Shielded Welding: High-quality welding with reduced oxidation.	Aerospace, automotive
	- Laser Welding: High precision for thin plates and fine parts.	Electronics, medical devices
Surface Treatment	- Sandblasting: Cleans surfaces and improves adhesion.	Construction, automotive
	- Painting: Anti-corrosion and aesthetic treatment.	Outdoor structures, marine
	- Electroplating: Enhances corrosion and wear resistance.	Electronics, automotive
Heat Treatment	- Annealing: Softens material for better machinability.	Machinery, tools
	- Quenching and Tempering: Increases hardness and strength.	Automotive, aerospace
	- Normalizing: Refines grain structure for improved mechanical properties.	Heavy equipment, construction
Machining	- Milling: Produces flat surfaces and complex shapes.	Aerospace, automotive
	- Turning: Used for machining round parts.	Automotive, machinery
	- Drilling: Creates holes in plates.	Construction, electronics
Inspection & QC	- Ultrasonic Testing: Detects internal defects.	Aerospace, energy
	- Hardness Testing: Ensures material hardness meets requirements.	Automotive, machinery
	- Dimensional Inspection: Verifies machining accuracy.	Precision engineering

Packaging and Transportation of Alloy Steel Plates

Aspect	Details	Advantages
Packaging Methods
Bare Packaging	- Suitable for thick and large-sized plates.	Cost-effective, ideal for short-distance transport.
Bundling	- Plates are strapped with steel or plastic bands.	Easy handling, prevents plates from scattering.
Wooden Crates	- Plates are placed in wooden crates with cushioning materials.	Provides better protection, suitable for long-distance or export.
Waterproof Packaging	- Plates are wrapped with waterproof paper or plastic film.	Prevents moisture and rust during transit.
Transportation Methods
Road Transport	- Trucks or flatbed trailers are used for short to medium distances.	Flexible, suitable for small to medium batches.
Rail Transport	- Rail freight cars are used for long-distance, large-volume shipments.	Cost-effective for bulk transportation.
Sea Transport	- Containers (20GP, 40GP, 40HQ) or bulk carriers are used for international or cross-sea shipments.	Suitable for oversized or overweight plates.
Air Transport	- Cargo planes are used for urgent or high-value shipments.	Fast delivery, ideal for urgent needs and small QTY or samples.

FAQ

Q: If the size I need is not in the size table you provided, can you provide it?

A: We support customized services and can cut or customize production. You only need to send us the steel plate size you need, and we will reply to you with the corresponding quotation.

Q: What are the specific uses of alloy plates?

A: Alloy plates have a wide range of uses, and different materials have different uses. Mainly used in:
Aerospace: High-precision component manufacturing,etc.
Automotive: Body and structural parts,etc.
Energy Industry: Pressure vessels and pipelines,etc.
Construction: Structural and decorative components,etc.

Q: How do you control quality?

A: Mill Test Certification is supplied with shipment, Third Party inspection is available. and we also get ISO,SGS, CE, BV certifications, etc.

Q: Can you provide sample?

A: We can provide the small samples in stock for free, as long as you contact us.

Q: What is the delivery time for orders?

A: Sample Order: 1-3 days after receipt of the full payment.
Stock Order: 3-7 days after receipt of the full payment.
OEM Order: 12-21 days after receipt of the deposit.

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