PRODUCT NAME :
alloy structure steel
STANDARD:
GB/T3077-1999 EN10083-1 EN10083-3 ISO 683-1
GRADE COMPARISION:
|
GB |
ГОСТ |
BS |
JIS |
NF |
DIN |
|
38CrMoAl |
38XMIOA |
905M39 |
SACM645 |
40CAD6.12 |
41CrAlMo07 |
ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84. ASTM A388
CHEMICAL COMPOSITION:
|
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Mo |
Al |
|
0.35/0.42 |
0.20/0.45 |
0.30/0.60 |
0.035 |
0.035 |
1.35/1.65 |
0.15/0.25 |
0.70/1.10 |
HEAT TREATMENT SPECIFICATION & MECHANICAL PROPERTIES:
Quenching temperature （℃）：940
Tensile strength σb (MPa)：≥980(100)
Yeild strength σs (MPa)：≥835(85)
elongation δ5 (%)：≥ 14
Reduction area ψ (%)：≥50
Impact Akv (J)：≥71
Hardness ：≤229
DELIVERY CONDITION :
normalized ,annealed, black surface ,rough machined or quenched & tempered , should be indicated in contract .
DIMENSION : mm
|
ROUND STEEL BAR |
COIL ROD |
WIRE |
SQUARE/ FLAT |
|
FORGED BAR |
ROLLED BAR |
HOT ROLLED |
COLD DRAW |
FORGED |
ROLLED |
|
80-650 |
16-250 |
∮5.5-20 |
∮0.2-13 |
120-800×120-800 |
5-38×44-150 10-90×60-305 |
length : forged bar free length 4-5.8M,rolled bar 5.8M. for customers special requirment, the bar length can do 20 meters long.
APPLIED RANGE:
Have very high nitrogenization performance and machinical perproties . Good heat resistance and stain resistance . Mostly used
for make all kinds of not large size nitrogenization parts which have high fatigue strength ,high wearing feature , demension accurate
after heat treatment , higher strength . Such as cylinder sleeve , socket sleeve , bottom cap , piston bolt , principal axis of precision
grinder, pricipal axis of lathe, boring bar , precision lead screw , gear ,worm ,high pressure valve , valve rod ,roller , some wear parts
of plastic extrusion .
REMARK：
Above listed parameters and sepcification only for reference . Specific parameters according to standard. Requirments beyond standard
will be negotiated by both sides.
Delivery state:annealed, spheroidal annealed, quenched & tempered ,bright bar, cold-drawn, etc.
Listed specifications are only typical grades; products of required specifications can be developed/produced as per international, Chinese
or industry standards,or based on agreements with customers.
