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Stainless steel grades that are similar to grade 420N stainless steels include martensitic steels such as the other versions of grade 420N, having vanadium, sulphur and molybdenum in their composition, and the grade 440 series. Non-standard grade 420C has carbon content that is little higher than that of grade 420.

S420N steel stockholders and suppliers, delivering to the whole of the India. We are suppliers of S420N grades in steel plate, round bar and flat bar. As an unalloyed low carbon steel grade S420N is supplied in the hot rolled and cold drawn conditions. The S420N steel specifications are high yield non alloy steels. First specified in the European EN10025 standard and later published by the British Standards Institute (BSI). These standards superseded the BS4360 grades. The average minimum yield for this material is 355 N/mm², hence the name S420N(with the 'S' giving reference to it being a structural steel).
Grade 420N stainless steel is a high-carbon steel with a minimum chromium content of 12%. Like any other stainless steel, grade 420N can also be hardened through heat treatment. It offers good ductility in its annealed state and excellent corrosion resistance properties when the metal is polished, surface grounded or hardened. This grade has the highest hardness - 50HRC - among all the stainless steel grades with 12% chromium.


Specification :


Dimensions EN, DIN, JIS, ASTM, BS, ASME, AISI
Size 5 mm To 500 mm
Diameter 0.1 mm to 100 mm
Length 100 mm To 6000 mm Long & Above
Finish Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Tolerance H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Form Round, Square, Hex (A/F),Flate, Rectangle, Billet, Ingot, Forging Etc.
Stainless Steel ASTM A-479, A-182, 304, 304L,304H,304S, 316, 316L,316 Ti, 316H, 309, 310, 310S, 317L, 321, 347, 409, 410, 420, 430, 440, 446, 904L. etc.
Duplex Steel 2205, 31803, 32750, 32760, 2101, 2304.
Alloy Steel A-182 - F5, F9, F11, F12, F21, F22 & F91
Special Grade Stainless Steel 17-4 PH, Alloy 800, Alloy 600. Hastelloy C276.
Carbon Steel A 105, LF 2, Duplex Steel.

S420N High Yield Strength Round Bar Equivalent Grades

Germany 
DIN,WNr 
DIN 17102:1983
France 
AFNOR
NFA 36 201:1992
China 
GB
Russia
GOST
Italy
UNI
India
IS 2062
India
Sail
StE420 E420R Q420D 16G2AF FeE355KTN E410 A/B/C Sailma 410HI
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S420N High Yield Strength Round Bar Chemical Composition

  Ladle analysis. 
S - sulphur content of 0,010 % max. can be agreed in the order for all products with a thickness of ≤ 16 mm intended for railway construction. 
The minimum value for the Al total content shall not apply if the steel contains sufficient quantities of nitrogen-fixing elements. 
CEV maximum carbon equivalent value CEV = C + Mn / 6 + (Cr + Mo + V) / 5 + (Cu + Ni) / 15
Steel grade C
max.
%
Si 
max.
%
Mn
%
P
max.
%
S
max. 
%
N
max.
%
Al 
total
%
Cu
max.
%
Cr 
max.
%
Ni
max.
%
Mo 
max.
%
Nb 
max.
%

max.
%
Ti
max.
%
CEV
max. %
Thickness (mm)
5 - 80 5 - 63 63 - 80
S420N 0,20 0,60 1,00 - 1,70 0,030 0,025 0,025 0,020 0,55 0,30 0,80 0,10 0,050 0,20 0,05 0,48 0,50

S420N High Yield Strength Round Bars Mechanical Properties

  Minimum yield strength Reh 
MPa
Tensile strength Rm 
MPa
Minimum elongation - A 
Lo = 5,65 * √So (%)
Steel grade Nominal thickness
mm
Nominal thickness
mm
Nominal thickness
mm
  ≤16 >16 
≤40
>40 
≤63
>63 
≤80
>80 
≤100
>100 
≤150
>150
≤200
>200
≤250
≤100 >100
≤200
>200
≤250
≤16 >16
≤40
>40
≤63
>63
≤80
>80
≤200
>200
≤250
S420N 420 400 390 370 360 340 330 320 520-680 500-650 500-650 19 19 19 18 18 18



Types of Round Bar Available


Buttweld Fittings

Round Bar

Buttweld Fittings

Square Bar

Buttweld Fittings

Flat Bar

Buttweld Fittings

Hex Bar

Buttweld Fittings

Triangle Bar

Buttweld Fittings

Hollow Bar



Marking & Packing


Our Nickel Alloy 2.4066 round bars are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All Nickel Alloy UNS N02200 bar are marked with Grade, Lot No, Size and our trade mark. We can also make custom marking on our products on Speical request from Purchaser.


Quality Assurance


Super Freeze India all Nickel Alloy 200 round bars, Nickel Alloy 200 bright bars and Nickel 200 hex bars are subject to strict inspection at each stage starting from material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, DIN, EN, and JIS codes and standards. We can also appoint official certified Inspection Agencies upon request of our clients so that they can witness the material reports, dimensions and quality conformity of products.

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