AISI 4340 / UNS G43400 Alloy Steel Sheet for Sales | W-Nr.1.6511 Steel Plate

AISI 4340 / UNS G43400 Alloy Steel Sheet for Sales | W-Nr.1.6511 Steel Plate - Image 2

AISI 4340 / UNS G43400 Alloy Steel Sheet for Sales | W-Nr.1.6511 Steel Plate - Image 3

AISI 4340 / UNS G43400 Alloy Steel Sheet for Sales | W-Nr.1.6511 Steel Plate - Image 4

AISI 4340 / UNS G43400 Alloy Steel Sheet for Sales | W-Nr.1.6511 Steel Plate

|PRODUCT SPECIFICATION

40CrNiMoA（ASTM 4340） alloy structural steel sheet is a high-quality carbon structural steel enhanced with specific alloying elements, which improve its strength, hardness, and durability. These alloying elements are carefully controlled to remain under 5% of the total content, ensuring optimal performance in demanding applications. This steel is particularly suitable for high-stress parts in the machinery, automotive, and aerospace industries, especially in load-bearing components where durability is crucial.

Material	Alloy Steel
Length	2000-10000mm
Standard	40CrNiMoA/A50403/SNCM439/G43400/36NiCrMo4
Technique	Hot Rolled
Thickness	2mm to 6mm
MOQ	5 TON
Application	Industrial
Country of Origin	Made in China

|CHEMICAL ELEMENT CONTENT (%)

Element	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum	0.38	0.15	0.6	–	–	0.7	1.65	–	0.2
Maximum	0.43	0.35	0.8	0.035	0.04	0.9	2	0.35	0.3

| PRODUCT DISPLAY

| APPLICATION

40CrNiMoA alloy structural steel sheet is ideally suited for high-demand components requiring exceptional toughness, high strength, and durability under extreme conditions. This steel is frequently used in critical, large-sized, and high-load parts across various industries:

Heavy Machinery: Perfect for high-load shafts, particularly in components with diameters over 250mm, such as heavy-duty machine shafts, gear components, and crankshafts.
Aerospace: Used for essential parts like helicopter rotor shafts and turbine shafts in jet engines, where high strength and durability are vital.
Automotive and Power Generation: Suitable for transmission parts, rotors, and blades operating at high temperatures (up to 400℃).
Special Applications: Post-nitriding, this steel is excellent for crafting parts requiring unique performance attributes. After low-temperature tempering or isothermal quenching, it can achieve ultra-high strength, making it ideal for precision components like gears, shafts, and fasteners.

With its adaptability for nitriding treatment, 40CrNiMoA steel is invaluable for manufacturing robust parts with high strength and plasticity, particularly those that demand specialized performance features.

Production Process

|PRODUCT PACKAGING

Why Choose us?

We use the most advanced equipment in China, with three production lines and a plant area of 30,000 square meters.
We select high-quality raw materials.
We implement strict quality inspection standards, and our products meet ISO and SGS international standards to ensure 100% compliance with customer requirements.
Advanced production management process, from production to delivery, efficient and fast.
We have professional sales staff in the Spanish, Portuguese, French, Arabic, and Russian markets.