Hot Rolled High-End 440c 440A 440b Stainless Steel Flat Bar Polished with Mtc

• Type: Stainless Steel Flats
• Standard: ASTM, AISI, GB, JIS, DIN
• Grade: 400 Series
• Shape: Flat
• Technique: Hot Rolled, Cold Drawn
• Surface Treatment: 2b,No.1,Hl,8k,Ba
• Model NO.: 440C 440A 440B
• Thickness: 3mm-30mm
• Width: 10mm-300mm
• Length: Normally 6 Meters or as Requirement
• Tolerance: -+0.02%
• Mtc: En 10204/3.1
• Transport Package: as Customer′s Requirement
• Trademark: ZYTC
• Origin: China
• HS Code: 72199000
• Production Capacity: 500 Tons/Month

Product Description

1: Brief Introduction Of 440C 

Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate
corrosion resistance, and good hardness and wear resistance. Grade 440C is capable of attaining, after
heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Its very high
carbon content is responsible for these characteristics, which make 440C particularly suited to such
applications as ball bearings and valve parts.
Corrosion Resistance:
*Good resistance to the atmosphere, fresh water, foods, alkalies and mild acids. Best resistance in the
hardened and tempered and passivated condition. A smooth polished surface also assists.
*The corrosion resistance of grade 440C approximates that of grade 304 in many environments.
Heat Resistance:
*Not recommended for use in temperatures above the relevant tempering temperature, because of
reduction in mechanical properties by over-tempering.
Heat Treatment:
*Annealing - Full anneal - 850-900°C, slow furnace cool to about 600°C and then air cool. Sub-critical
Annealing - 735-785°C and slow furnace cool.
H*ardening - Heat to 1010-1065°C, followed by quenching in warm oil or air. Oil quenching is necessary
for heavy sections. Immediately temper at 150-370°C to obtain a wide variety of hardness values and
mechanical properties as indicated in the accompanying table.
*Tempering in the range 425-565°C is to be avoided because of reduced impact resistance and
corrosion resistance. Tempering in the range 590-675°C results in lower hardness (the product become
machinable) and high impact resistance.
Welding:
*If welding is necessary pre-heat at 250°C and follow welding with a full anneal. Grade 420 filler will give
a high hardness weld (although not as high as the 440C), but 309 or 310 will produce soft welds with
higher ductility.
Machining:
*In the annealed condition this grade is relatively easily machined; approximately the same as for high
speed steel. Chips are tough and stringy so chip breakers are important. If these grades are hardened
machining becomes more difficult and probably impossible.
Other Grades:
201,202,21-4N,301,302,301L,303,303Se,304,304L,304H,304LN,304N,305,S38400,308,309,309S,310,310s,
316,316L,316H,316Ti,316N,316LN,317,317L,317LMN,317LN,321,321H,347,347H,S3100,S31803,S3205,
S32304,S31200,S31260,S32507,405,409,429,430,430F,434,444,403,410S,410,416,420,420F,431F,440A
440B,440C,440F,610,630,631,632,635,660,Alloy 200,Monel 400 ,Alloy K-500 ,Inconel 600 , Incconel 601,
Inconel 625 , Inconel 718 , Alloy 800 ,Alloy 800H,Alloy 800HT,Inconel 825,Alloy 276, Alloy 20, Alloy 59

2: Chemical Composition  

Tianjin Zhongyantiancheng Steel Co.,Ltd
Commodity	Stainless Steel Flat Bar
Material	440C
Standard	GB	JIS	ASTM/ASME	DIN
	9Cr18/11Cr17	SUS 440C	440C	1.4125
Chemical Composition	C	Mn	P	S
	0.95-1.20	≤1.00	≤0.040	≤0.03
	Si	Cr	Mo
	≤1.00	16.0-18.0	≤0.75
Thickness	3mm-30mm
Width	10mm-300mm
Length	Produce as customers' request
Surface	No.1/HL/Birght
manufacture	Hot Rolled/Cold Rolled
Packing	Packed in bundles with standard export sea-worthy package
Delivery Time	Within 15 working days, according to customers' quantities
Quality	High Quality.SGS inspection is accepted if needed
Place of Origin	Tianin
Productivity	500 MT/Month
Payment	T/T,L/C
MOQ	1 MT
Application	Foodstuff, Gas, metallurgy, biology, electron, chemical etc.

3: Stainless Steel Plate/Coil/Flat Bar Process 

4:Stainless Steel Plate/Flat Bar Package 

5: Company Introduction