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    Data Sheet A-10: Alloy Type

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    mohamed Adel
    The document provides information on Metrode Products Ltd's 0.5% Mo creep resisting steel welding consumables. It describes two products: - Mo.B, a basic flux coated mild steel electrode for manual metal arc welding, with 0.5% Mo in the weld metal for improved creep strength up to 450°C. - CMo, a copper coated solid wire for gas tungsten arc and gas metal arc welding, also with 0.5% Mo in the weld metal. Both products are suitable for welding similar 0.5% Mo creep resisting steels. Technical details are given on specifications, composition, mechanical properties, and guidelines for welding, heat treatment and storage of the

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    Data Sheet A-10: Alloy Type

    Uploaded by

    mohamed Adel
    80 views3 pages
    The document provides information on Metrode Products Ltd's 0.5% Mo creep resisting steel welding consumables. It describes two products: - Mo.B, a basic flux coated mild steel electrode for manual metal arc welding, with 0.5% Mo in the weld metal for improved creep strength up to 450°C. - CMo, a copper coated solid wire for gas tungsten arc and gas metal arc welding, also with 0.5% Mo in the weld metal. Both products are suitable for welding similar 0.5% Mo creep resisting steels. Technical details are given on specifications, composition, mechanical properties, and guidelines for welding, heat treatment and storage of the

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    A-10

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    The document provides information on Metrode Products Ltd's 0.5% Mo creep resisting steel welding consumables. It describes two products: - Mo.B, a basic flux coated mild steel electrode for manual metal arc welding, with 0.5% Mo in the weld metal for improved creep strength up to 450°C. - CMo, a copper coated solid wire for gas tungsten arc and gas metal arc welding, also with 0.5% Mo in the weld metal. Both products are suitable for welding similar 0.5% Mo creep resisting steels. Technical details are given on specifications, composition, mechanical properties, and guidelines for welding, heat treatment and storage of the

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    80 views3 pages

    Data Sheet A-10: Alloy Type

    Uploaded by

    mohamed Adel
    The document provides information on Metrode Products Ltd's 0.5% Mo creep resisting steel welding consumables. It describes two products: - Mo.B, a basic flux coated mild steel electrode for manual metal arc welding, with 0.5% Mo in the weld metal for improved creep strength up to 450°C. - CMo, a copper coated solid wire for gas tungsten arc and gas metal arc welding, also with 0.5% Mo in the weld metal. Both products are suitable for welding similar 0.5% Mo creep resisting steels. Technical details are given on specifications, composition, mechanical properties, and guidelines for welding, heat treatment and storage of the

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    METRODE PRODUCTS LTD

    Data Sheet A-10 HANWORTH LANE, CHERTSEY


    SURREY, KT16 9LL, UK
    Tel: +44(0)1932 566721
    Fax: +44(0)1932 565168
    Email: info@metrode.com
    0.5%Mo CREEP RESISTING STEEL Website: www.metrode.com

    Alloy type Favourable mechanical properties of both as-welded


    and stress-relieved weld metal are also useful in
    Ferritic creep resisting 0.5%Mo steels for elevated
    welding structural and general engineering steels for
    temperature service.
    ambient or sub-zero temperature service. In this
    Materials to be welded respect these consumables are related to the higher
    strength manganese-molybdenum alloyed steel
    pipe/tube:
    consumables.
    ASTM A335 grade P1
    A209 & A 250 grade T1 Microstructure
    BS 3059 grade 243
    3606 grades 243, 245, 261 In the stress-relieved condition the microstructure
    consists of acicular ferrite with some tempered
    forged:
    bainite.
    ASTM A336 grade F1
    A204 grades A, B, C
    BS EN
    Welding guidelines
    10028-2 grade 16Mo3 (1.5415)
    DIN 15Mo3 (1.5415) Preheat and interpass temperatures are normally in
    16Mo5 (1.5423) the range 100-250C depending upon thickness being
    10MnMo 4 5 (1.5424) welded and restraint.
    11MnMo 4 5 (1.5425)
    cast: Related alloy groups
    ASTM A217 grade WC1 For high strength structural welding applications the
    A352 grade LC1 MnMo alloys (A-50) are related.
    BS 1504 grade 245
    3100 grade B1
    DIN GS-22Mo 4 (1.5419) PWHT
    PWHT to temper the weldment varies according to
    Applications the code; the extremes range from 550°C up to 720°C
    but the most common range is 630-670°C. For
    Nominal 0.5% Mo alloying results in improved material up to 20mm thick some codes allow the
    elevated temperature performance over that of CMn PWHT to be omitted.
    steels. Used for the fabrication of vessels and
    associated pipework demanding creep rupture
    strength and ductility at temperatures up to about Products available
    450ºC. Process Product Specification
    MMA Mo.B AWS E7018-A1
    The Mo content also enhances resistance to hydrogen
    attack in chemical process plant operation. TIG/MIG CMo AWS ER70S-A1

    Rev 03 03/12 DS: A-10 (pg 1 of 3)


    Mo.B Molybdenum alloyed MMA electrode for elevated temperature service
    Product description Basic flux, metal powder type coating on high purity mild steel core wire. Moisture resistant coating giving
    very low weld metal hydrogen levels.
    Recovery is about 120% with respect to core wire, 65% with respect to whole electrode.

    Specifications AWS A5.5 E7018-A1 H4


    BS EN ISO 3580-A E Mo B 3 2
    BS and AWS Mn ranges overlap, but required specification should be stated on order.

    ASME IX Qualification QW432 F-No 4, QW442 A-No 2

    Composition C Mn* Si S P Cr Ni Mo Cu
    (weld metal wt %) min -- 0.75 -- -- -- -- -- 0.40 --
    max 0.10 1.20 0.60 0.025 0.030 0.20 -- 0.65 --
    typ 0.05 0.8 0.3 0.01 0.015 0.05 0.05 0.55 0.05
    * BS2493 Mn:Si ≥2:1, AWS A5.5 Mn 0.90% max.

    All-weld mechanical PWHT 600-650ºC/h * min typical As-welded typical


    properties Tensile strength MPa 510 550-610 590
    0.2% Proof stress MPa 400 460-525 480
    Elongation on 4d % 22 27-32 27
    Elongation on 5d % 22 23-29 23
    Reduction of area % -- 65-72 68
    Impact energy - 20°C J -- 130 100
    - 30ºC J -- 115 --
    Hardness HV -- 200 200
    * BS and DIN: 600ºC/1h; AWS: 620ºC/1h.
    Satisfactory properties are also obtained in the as-welded condition.

    Operating parameters DC +ve or AC (OCV: 70V min)

    ø mm 2.5 3.2 4.0 5.0


    min A 70 80 100 140
    max A 110 140 180 240

    Packaging data ø mm 2.5 3.2 4.0 5.0


    length mm 350 380 450 450
    kg/carton 12.0 15.0 16.5 16.5
    pieces/carton 552 390 237 153

    Storage 3 hermetically sealed ring-pull metal tins per carton, with unlimited shelf life. Direct use from tin will give
    hydrogen <5ml/100g weld metal during 8h working shift.
    For electrodes that have been exposed:
    Redry 250 – 300°C/1-2h to ensure H2 < 10ml/100g, 300-350ºC/1-2h to ensure H2 < 5ml/100g. Maximum
    420°C, 3 cycles, 10h total.
    Storage of redried electrodes at 100 – 200°C in holding ovens, or 50-150ºC in heated quivers: no limit, but
    maximum 6 weeks recommended.

    Fume data Fume composition, wt % typical:


    Fe Mn Ni Cr Cu Pb F OES (mg/m3)
    16 7 <0.1 <0.1 <0.2 <0.1 17 5

    Rev 03 03/12 DS: A-10 (pg 2 of 3)


    CMo 0.5%Mo solid TIG and MIG wire for creep resisting steels
    Product description Copper coated solid wire for TIG and MIG.

    Specifications AWS A5.28 ER70S-A1 (Previous classification was ER70S-G)


    BS EN ISO 21952-A Mo Si

    ASME IX Qualification QW432 F-No 6, QW442 A-No 2

    Composition C Mn Si S P Cr Ni Mo Cu V
    (wire wt %) min 0.08 0.90 0.50 -- -- -- -- 0.45 -- --
    max 0.12 1.30 0.70 0.020 0.020 0.2 0.20 0.60 0.3 0.03
    typ 0.1 1.2 0.6 0.01 0.01 0.03 0.02 0.5 0.05 0.01

    All-weld mechanical Properties as-welded (AW) or PWHT: min. * typical: TIG MAG: Ar + 5% CO2
    properties AW 620ºC/1h AW 620ºC/1h
    Tensile strength MPa 515 662 640 650 620
    0.2% Proof stress MPa 400 540 520 530 505
    Elongation on 4d % 19 29 25 29 25
    Elongation on 5d % 22 26 24 25 24
    Impact energy - 30°C J -- 52 170 42 96
    Hardness cap/mid HV -- 210/245 205/230 215/235 200/220
    * Minimum values are after PWHT 620ºC/1h (AWS) or 595ºC/0.5h (DIN) and as-welded for BS EN.
    MAG welds using more oxidising shielding gas (higher CO2 + O2) will have lower strength than shown.

    Typical operating TIG MIG


    parameters Argon + 2-20%CO2
    Shielding Argon
    Argon + 1.5% O2 or proprietary
    Current DC- DC+
    Diameter 2.4mm 1.2mm
    Parameters 100A, 12V 260A, 26V

    Packaging data ø mm TIG MIG


    1.2 -- 15kg spool
    1.6 5kg tube --
    2.4 5kg tube --

    Fume data MIG fume composition (wt %) (TIG fume negligible)

    Fe Mn Cr3 Ni Mo Cu OES (mg/m3)


    55 5 <0.1 <0.1 <0.5 1.2 5

    Rev 03 03/12 DS: A-10 (pg 3 of 3)

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