440C Solid stainless steel flat steel: strong load-bearing capacity, not easy to deform

Strong, durable, and anti-oxidation, it is an ideal material for frames and brackets

Standard: ASTM A276

Grade: 304 316 321 440C 630 904L

Size: 2x20 to 25x150mm

product details

440C Stainless Steel Flat Bar

440C stainless steel is a high-carbon, martensitic stainless steel renowned for its exceptional hardness, strength, and wear resistance. When formed into flat bar, it becomes 440C stainless steel flat bar, widely used in applications requiring extremely high hardness and wear resistance.

Astm A240 201 ss 304 303 316 310s 409 304 316 2b Ba No

Features

Extreme Hardness: 440C stainless steel can reach a hardness of HRC 58-62 after heat treatment, which is its most significant advantage. This high hardness enables it to withstand intense wear and deformation.
Excellent Wear Resistance: Its high carbon content results in a high concentration of hard carbides in its structure, which imparts its excellent wear resistance.
Moderate Corrosion Resistance: Although classified as stainless steel, 440C's corrosion resistance is not as good as other stainless steels (such as 304 or 316) due to its high carbon content. It performs well in dry or mildly corrosive environments, but is susceptible to rusting in seawater or highly acidic environments.
Magnetism: 440C stainless steel is a martensitic stainless steel and, as such, exhibits strong magnetic properties.
Machinability: In the annealed state, 440C stainless steel is fairly machinable, but once hardened by quenching, it becomes much more difficult to machine, requiring specialized tools and techniques.

Common Uses

Toolmaking: This is one of 440C's most well-known applications, often used to make high-quality blades, scissors, and scalpels. Its high hardness ensures a sharp edge and a long-lasting hold.

Bearings: 440C is an ideal material for precision bearings due to its ability to withstand high loads and excellent wear resistance.

Molds and Gages: Used in the manufacture of molds, gauges, and tools requiring high hardness and dimensional stability.

Valve Components: It is also used in certain valve and pump components where high hardness is critical.

440 Stainless Steel Flat Bar Spections:

Specification:	A276/484 / DIN 1028
Material:	303 304 316 321 416 420 440 440C
Stainless Steel Round Bars:	Outside Diameter in the range of 4mm to 500mm
Width:	1mm to 500mm
Thickness:	1mm to 500mm
Technique:	Hot Rolled Annealed & Pickled (HRAP) & Cold drawn & Forged & Cut Sheet and Coil
Length:	3 to 6 Meters / 12 to 20 feet
Marking:	Size, Grade, Manufacture name on Each Bars/Pieces
Packing:	Each steel bar has the singal, and several will be bundled by weaving bag or as per requirement.

Equivalent Grades Of 440c SS Flat Bar:

American	ASTM	440A	440B	440C	440F
UNS	S44002	S44003	S44004	S44020	/
Japanese	JIS	SUS 440A	SUS 440B	SUS 440C	SUS 440F
German	DIN	1.4109	1.4122	1.4125	/
China	GB	7Cr17	8Cr17	11Cr179Cr18Mo	Y11Cr17

Chemical Composition Of 440c SS Flat Bar:

Grades	C	Si	Mn	P	S	Cr	Mo	Cu	Ni
440A	0.6-0.75	≤1.00	≤1.00	≤0.04	≤0.03	16.0-18.0	≤0.75	(≤0.5)	(≤0.5)
440B	0.75-0.95	≤1.00	≤1.00	≤0.04	≤0.03	16.0-18.0	≤0.75	(≤0.5)	(≤0.5)
440C	0.95-1.2	≤1.00	≤1.00	≤0.04	≤0.03	16.0-18.0	≤0.75	(≤0.5)	(≤0.5)
440F	0.95-1.2	≤1.00	≤1.25	≤0.06	≥0.15	16.0-18.0	/	(≤0.6)	(≤0.5)