Stainless Steel 431 (S43100)

Stainless Steel 431 (S43100)
Stainless Steel 431 (S43100)
Price And Quantity
  • 100
  • Kilograms/Kilograms
  • 55.00 - 450.00 INR
Product Specifications
  • Steel Products
  • Alloy Steel
  • Steel Plates
  • 4-150 Millimeter (mm)
  • Plate
  • Galvanized
  • Construction
  • Silver
    Product Description

    Stainless Steel 431 (S43100)                    

    MARTENSITIC STAINLESS STEEL

    Martensitic, or hardenable stainless steels, are classified in the 400 series, usually with 11.5% chromium up to 18% chromium, with higher levels of carbon than ferritics, and are capable of being heat treated to a wide range of hardness and strength levels. Commercially produced AISI grades of this class are Type 410, 410H, 420, and 420HC. Martensitic stainless steels are used extensively in cutlery, sport knives and multi-purpose tools.

    Martensitic stainless steels can be high or low-carbon steels built around the Type 410 composition of iron, 12% chromium, and up to 1.2% carbon. They are usually tempered and hardened. Tempered martensite gives steel good hardness and high toughness; used largely for medical tools (scalpels, razors and internal clamps).  Untempered martensite is low in toughness and therefore brittle.

    Martensitic stainless steels work in the same way as many low alloy steels. Carbon is the key element. They have a structure similar to the ferritics with a 'body-centred tetragonal' (bct) crystal lattice. Normally, when steels are heated they transform from ferrite to austenite. On slow cooling the steel transforms back to ferrite. However, with fast cooling through quenching in water, oil or sometimes even air, the carbon atoms become trapped in a somewhat distorted atomic matrix. This is known as body-centred tetragonal. The distortion of the atomic matrix leads to the hard martensitic structure. The higher the carbon level the harder is the martensite. In the as-quenched condition, martensitic steels are virtually useless as they have insufficient impact toughness.

    Due to the addition of carbon, they can be hardened and strengthened by heat treatment, in a similar way to carbon steels. They are classed as a "hard" ferro-magnetic group. In the annealed condition, they have tensile yield strengths of about 275 MPa and so they are usually machined, cold formed, or cold worked in this condition. The strength obtained by heat treatment depends on the carbon content of the alloy. Increasing the carbon content increases the strength and hardness potential but decreases ductility and toughness. The higher carbon grades are capable of being heat treated to hardnesses of 60 HRC. 

    Optimum corrosion resistance is attained in the heat-treated i.e. hardened and tempered condition. Martensitic grades have been developed with nitrogen and nickel additions but with lower carbon levels than the traditional grades. These steels have improved toughness, weldability and corrosion resistance.

    Martensitic stainless steels, such as types 403, 410, 410NiMo and 420, are similar in composition to the ferrite group, but contain a balance of C and Ni vs. Cr and Mo; hence, austenite at high temperatures transforms to martensite at low temperatures. Like ferrite, they also have a body-centered cubic crystal structure in the hardened condition. The carbon content of these hardenable steels affects forming and welding. To obtain useful properties and prevent cracking, the weldable martensitics usually require preheating and postweld heat treatment.

    MAJOR GRADES OF MARTENSITIC STAINLESS STEEL:

    410- BASIC GRADE

    420- HIGHER HARDNESS GRADE

    431- HIGHER CORROSION RESISTANT AND TOUGHNESS GRADE

    440A/B/C- INCREASING HARDNESS AFTER HEAT TREATMENT

    416- WELDING CONSUMABLE GRADES


    Martensitic stainless steels were the first stainless steels that were commercially developed (as cutlery) and have a relatively high carbon content (0.1 - 1.2%) compared to other stainless steels. They are plain chromium steels containing between 12 and 18% chromium. They are magnetic and hardenable by quenching and tempering like plain carbon steels and find their main application in cutlery, aerospace and general engineering.

    A relatively new group of martensitic stainless steels are the supermartensitic stainless steels. The supermartensitic grades combine high strength and low-temperature toughness with acceptable corrosion resistance in many applications.


    Martensitic Stainless Applications

    Martensitic stainless steel are typically used for:

    • Knife blades

    • Cutlery

    • Surgical instruments

    • Fasteners

    • Shafts

    • Springs



    MARTENSITIC STAINLESS STEELS

    TYPE

    Equivalent UNS

    403

    S40300

    410

    S41000

    414

    S41400

    416

    S41600

    416Se

    S41623

    420

    S42000

    420F

    S42020

    422

    S42200

    431

    S43100

    440A

    S44002

    440B

    S44003

    440C

    S44004


    Chemical composition of stainless steel

    Classification

    Specification

    Chemical Composition

    other

    JIS

    AISI

    C

    Si

    Mn

    P

    S

    Ni

    Cr

    Mo

    Cu

    N


    Martensitic Grades

    SUS403

    403

    Max.0.15

    Max.0.50

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    11.50~13.00

    -

    -

    -

    -

    SUS410

    410

    Max.0.15

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    11.50~13.50

    -

    -

    -

    -

    SUS410J1

    -

    0.08~0.18

    Max.0.60

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    11.50~14.00

    0.30~0.60

    -

    -

    -

    SUS410F2

    -

    Max.0.15

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    11.50~13.50

    -

    -

    -

    Pb 0.05˜0.30

    SUS416

    416

    Max.0.15

    Max.1.00

    Max.1.25

    Max.0.060

    Min.0.15

    (1)

    12.00~14.00

    (2)

    -

    -

    -

    SUS420J1

    420

    0.16~0.25

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    12.00~14.00

    -

    -

    -

    -

    SUS420J2

    420

    0.26~0.40

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    12.00~14.00

    -

    -

    -

    -

    SUS420F

    420F

    0.26~0.40

    Max.1.00

    Max.1.25

    Max.0.060

    Min.0.15

    (1)

    12.00~14.00

    (2)

    -

    -

    -

    SUS420F2

    -

    0.26~0.40

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    12.00~14.00

    -

    -

    -

    Pb 0.05~0.30

    SUS431

    431

    Max.0.20

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    1.25~2.50

    15.00~17.00

    -

    -

    -

    -

    SUS440A

    440A

    0.60~0.75

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    16.00~18.00

    (3)

    -

    -

    -

    SUS440B

    440B

    0.75~0.95

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    16.00~18.00

    (3)

    -

    -

    -

    SUS440C

    440C

    0.95~1.20

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    (1)

    16.00~18.00

    (3)

    -

    -

    -

    SUS440F

    S44020

    0.95~1.20

    Max.1.00

    Max.1.25

    Max.0.060

    Min.0.15

    (1)

    16.00~18.00

    (3)

    -

    -

    -

    Ferritic Grades

    SUS405

    405

    Max.0.08

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    -

    11.50~14.50

    -

    -

    -

    Al 0.10~0.30

    SUS410L

    -

    Max.0.03

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    -

    11.00~13.50

    -

    -

    -

    -

    SUS430

    430

    Max.0.12

    Max.0.75

    Max.1.00

    Max.0.040

    Max.0.030

    -

    16.00~18.00

    -

    -

    -

    -

    SUS430F

    430F

    Max.0.12

    Max.1.00

    Max.1.25

    Max.0.060

    Min.0.15

    -

    16.00~18.00

    (2)

    -

    -

    -

    SUS434

    434

    Max.0.12

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    -

    16.00~18.00

    0.75~1.25

    -

    -

    -

    SUS447J1

    -

    Max.0.01

    Max.0.40

    Max.0.40

    Max.0.030

    Max.0.020

    -

    28.50~32.00

    1.50~2.50

    -

    Max.0.015

    -

    SUSXM27

    -

    Max.0.01

    Max.0.40

    Max.0.40

    Max.0.030

    Max.0.020

    -

    25.00~27.50

    0.75~1.50

    -

    Max.0.015

    -

    Austenitic Ferritic Grades

    SUS329J1

    329

    Max.0.08

    Max.1.00

    Max.1.50

    Max.0.040

    Max.0.030

    3.00~6.00

    23.00~28.00

    1.00~3.00

    -

    -

    -

    SUS329J3L

    S31803

    Max.0.03

    Max.1.00

    Max.2.00

    Max.0.040

    Max.0.030

    4.50~6.50

    21.00~24.00

    2.50~3.50

    -

    0.08~0.20

    -

    SUS329J4L

    S31260

    Max.0.03

    Max.1.00

    Max.1.50

    Max.0.040

    Max.0.030

    5.50~7.50

    24.00~26.00

    2.50~3.50

    -

    0.08~0.30

    -

    Austenitic Grades

    SUS201

    201

    Max.0.15

    Max.1.00

    5.50~7.50

    Max.0.060

    Max.0.030

    3.50~5.50

    16.00~18.00

    -

    -

    0.25??

    -

    SUS202

    202

    Max.0.15

    Max.1.00

    7.50~10.00

    Max.0.060

    Max.0.030

    4.00~6.00

    17.00~19.00

    -

    -

    Max.0.25

    -

    SUS301

    301

    Max.0.15

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    6.00~8.00

    16.00~18.00

    -

    -

    -

    -

    SUS302

    302

    Max.0.15

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    8.00~10.00

    17.00~19.00

    -

    -

    -

    -

    SUS303

    303

    Max.0.15

    Max.1.00

    Max.2.00

    Max.0.200

    Min.0.15

    8.00~10.00

    17.00~19.00

    (2)

    -

    -

    -

    SUS303Se

    303Se

    Max.0.15

    Max.1.00

    Max.2.00

    Max.0.200

    Max.0.060

    8.00~10.00

    17.00~19.00

    -

    -

    -

    Se Min.0.15

    SUS303Cu

    -

    Max.0.15

    Max.1.00

    Max.3.00

    Max.0.200

    Min.0.15

    8.00~10.00

    17.00~19.00

    (2)

    1.50~3.50

    -

    -

    SUS304

    304

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    8.00~10.50

    18.00~20.00

    -

    -

    -

    -

    SUS304L

    304L

    Max.0.03

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    9.00~13.00

    18.00~20.00

    -

    -

    -

    -

    SUS304N1

    304N

    Max.0.08

    Max.1.00

    Max.2.50

    Max.0.045

    Max.0.030

    7.00~10.50

    18.00~20.00

    -

    -

    0.10~0.25

    -

    SUS304N2

    -

    Max.0.08

    Max.1.00

    Max.2.50

    Max.0.045

    Max.0.030

    7.50~10.50

    18.00~20.00

    -

    -

    0.15~0.30

    Nb Max.0.15

    SUS304LN

    304LN

    Max.0.03

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    8.50~11.50

    17.00~19.00

    -

    -

    0.12~0.22

    -

    SUS304J3

    -

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    8.00~10.50

    17.00~19.00

    -

    1.00~3.00

    -

    -

    SUS305

    305

    Max.0.12

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    10.50~13.00

    17.00~19.00

    -

    -

    -

    -

    SUS309S

    309S

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    12.00~15.00

    22.00~24.00

    -

    -

    -

    -

    SUS310S

    310S

    Max.0.08

    Max.1.50

    Max.2.00

    Max.0.045

    Max.0.030

    19.00~22.00

    24.00~26.00

    -

    -

    -

    -

    SUS316

    316

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    10.00~14.00

    16.00~18.00

    2.00~3.00

    -

    -

    -

    SUS316L

    316L

    Max.0.03

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    12.00~15.00

    16.00~18.00

    2.00~3.00

    -

    -

    -

    SUS316N

    316N

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    10.00~14.00

    16.00~18.00

    2.00~3.00

    -

    0.10~0.22

    -

    SUS316LN

    316LN

    Max.0.03

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    10.50~14.50

    16.50~18.50

    2.00~3.00

    -

    0.12~0.22

    -

    SUS316Ti

    -

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    10.00~14.00

    16.00~18.00

    2.00~3.00

    -

    -

    Ti Min.5xC%

    SUS316J1

    -

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    10.00~14.00

    17.00~19.00

    1.20~2.75

    1.00~2.50

    -

    -

    SUS316J1L

    -

    Max.0.03

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    12.00~16.00

    17.00~19.00

    1.20~2.75

    1.00~2.50

    -

    -

    SUS316F

    -

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Min.0.10

    10.00~14.00

    16.00~18.00

    2.00~3.00

    -

    -

    -

    SUS317

    317

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    11.00~15.00

    18.00~20.00

    3.00~4.00

    -

    -

    -

    SUS317L

    317L

    Max.0.03

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    11.00~15.00

    18.00~20.00

    3.00~4.00

    -

    -

    -

    SUS317LN

    -

    Max.0.03

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    11.00~15.00

    18.00~20.00

    3.00~4.00

    -

    0.10~0.22

    -

    SUS317J1

    -

    Max.0.04

    Max.1.00

    Max.2.50

    Max.0.045

    Max.0.030

    15.00~17.00

    16.00~19.00

    4.00~6.00

    -

    -

    -

    SUS836L

    -

    Max.0.03

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    24.00~26.00

    19.00~24.00

    5.00~7.00

    -

    Max.0.25

    -

    SUS890L

    -

    Max.0.02

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    23.00~28.00

    19.00~23.00

    4.00~5.00

    1.00~2.00

    -

    -

    SUS321

    321

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    9.00~13.00

    17.00~19.00

    -

    -

    -

    Ti Min.5xC%

    SUS347

    347

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    9.00~13.00

    17.00~19.00

    -

    -

    -

    Nb Min.10xC%

    SUSXM7

    304Cu

    Max.0.08

    Max.1.00

    Max.2.00

    Max.0.045

    Max.0.030

    8.50~10.50

    17.00~19.00

    -

    3.00~4.00

    -

    -

    SUSXM15J1

    -

    Max.0.08

    3.00~5.00

    Max.2.00

    Max.0.045

    Max.0.030

    11.50~15.00

    15.00~20.00

    -

    -

    -

    -

    Precipitation Hardening Grades

    SUS630

    S17400

    Max.0.07

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    3.00~5.00

    15.00~17.50

    -

    3.00~5.00

    -

    Nb 0.15~0.45

    SUS631

    S17700

    Max.0.09

    Max.1.00

    Max.1.00

    Max.0.040

    Max.0.030

    6.50~7.75

    16.00~18.00

    -

    -

    -

    Al 0.75~1.50


    * SUS329J1 denotes austenitic and ferritic stainless steel.

    Note:
    (1) May contain at most 0.6% Ni.
    (2) May have at most 0.6% Mo added.
    (3) May have at most 0.75% Mo added.

    Remarks:
    1) Ferritic SUS447J1 and SUSXM27 may contain at most 0.60% Ni.
      SUS447J1 and SUSXM27 may contain at most 0.50% Ni, 0.20% Cu, and 0.50% Ni + Cu; and any alloy element other than listed can be added if required.
    2) With SUSXM15J1 any alloy element other than listed can be added if required.






     

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