EN39B是哪国的牌号？

舞中飚歌

EN39B是哪国的牌号？


& _: I+ g: D( l1 s  @; YEN代表什么意思？？？
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; d! n! F  D" o. c9 t; s, m谢谢...............

zhangzu

Material: En39B 标准：   B.S. 国家与地区：   United Kingdom % Z5 M0 K: K, H$ E2 q, j! N- ~2 h5 L4 V

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#	钢种	次级类别	详细资料
1	结构钢	BS 970 Wrought steels for mechanical and allied engineering purposes

xinfeng123

请看这个是否有用.

( N. a& M; ?5 ]. A[ 本帖最后由 xinfeng123 于 2008-3-22 12:35 编辑 ]

asdolmlm

EN是欧洲标准European的简写

lightmetal

英國標准
EN39B Case hardening steel
                          C      Si     Mn Ni     Cr    Mo    S         P
3 j4 V1 p3 p' h/ S(Ave. values %) 0.15 0.25 0.4   4.2  1.2    0.25  0.025 0.025
                      AS            DIN             BS
NEAREST
STANDARD X9315     1.6723         835 M 15
$ E2 G  x/ h* q$ D7 l* `; Y: N
DESCRIPTION
    4¼% Nickel Chromium Molybdenum case hardening steel for large and highly
5 H: J+ m" K! \; K3 S; Wstressed applications.

6 b+ R8 m6 |0 h) SAPPLICATIONS
    Components with large cross sections requiring very high toughness and core strength (1300 MPa) such as gears, gear shafts and heavy duty gear shafts in aircraft, truck construction and mechanical engineering.

MECHANICAL PROPERTIES Heat Treated Condition
: T  d  x- a9 W0 `7 E9 z1 FTensile Strength MPa  1310
Elong.%                       12
" Z: U- G3 ]5 o5 Y' H& I8 c8 q% wIzod Impact J                33
$ C8 Y+ ^7 _% A  A( [Brinell Hardness Annealed  277max

HEAT TREATMENT
; x! Q, W+ N: O! C# i" T$ MForge                850-1050oC. Cool in furnace.
Normalize        850-880oC. Air cool.
' w; ]4 |, ~$ A7 T1 _# e% |6 p' \Anneal             650-700oC. Cool slowly in controlled furnace.
Carburize          880-930oC. Furnace or Air cool
2 ~/ x! s- G8 M3 C# E$ S) M( l& ?Core Refine        850-880oC. Oil quench or Air cool.
Harden              760-780oC Oil quench.
Temper            180-200oC air cool

( Q4 L. |4 s  S. M( {; lWELDING
/ v* M& [# k/ L/ z        Parts should be welded before Carburizing and Hardening. Preheat to 250-350oC.
) ?2 l0 g& U* T+ j0 w. F/ h5 L% S4 V        Filler metals:-Bohler FOX DCMS-KB or FOX 2.5 Ni electrodes. DCMS-IG wire.

0 q: w  x4 b& _% r7 J( U6 _8 [SIZE  RANGE
Round 42-142 mm

舞中飚歌

太感谢各位了....good good

kevin8hu

英国的标准，EN是欧洲标准European的简写。