40CrNiMo u'amea taai vevela lapotopoto pa

40CrNiMoA uamea e faʻaaogaina pe a uma ona faʻafefe ma faʻafefe, ma faʻaaogaina e gaosia ai vaega taua e manaʻomia ai le palasitika lelei, malosi maualuga ma le tele tele. Mo se faʻataʻitaʻiga, o mea mamafa mamafa i masini mamafa, faʻauma turbine shafts e sili atu i le 250 mm, lau, faʻasalalau, faʻamau, crankshafts, gears, ma isi mea, e mafai foi ona faʻaaogaina mo rotor shafts ma lau o loʻo galue i le vevela e sili atu i le 400. °C.
Chrome-Moly fa'asologa u'amea u'amea maualalo e aofia ai le 0.5% - 9% Cr ma le 0.5% - 1% Mo ma maualalo ifo nai lo le 0.20% carbon. 40CrNiMoA, 4340 ma SNCM439 o mea u'amea chromoly u'amea maualalo mai tulaga eseese.

4340 ma le SNCM439 o faʻamaumauga mai Amerika ma Iapani. I le tele o tulaga e mafai ona avea ma isi mea, se'i vagana ua i ai se fa'amatalaga fa'apitoa pe fa'aaoga mo fa'amoemoe fa'apitoa. O latou eseesega e masani lava ona i ai i elemene kemisi, faʻamatalaga faʻaalia e pei ona taua i lalo:

Tulaga	GB	AISI	JIS
Meafaitino	40CrNiMoA	4340	SNCM439（SNCM8）
C	0.37~0.44	0.38~0.43	0.36~0.43
Si	0.17~0.37	0.15~0.35	0.15~0.35
Mn	0.50~0.80	0.60~0.80	0.60~0.90
P	≤0.025	≤0.035	≤0.030
S	≤0.025	≤0.040	≤0.030
Cr	0.60~0.90	0.70~0.90	0.60~1.00
Ni	1.25~1.65	1.65~2.00	1.60~2.00
Mo	0.15~0.25	0.20~0.30	0.15~0.30

40CrNiMoA Alloy Steel Meatotino Mechanical

• Malosiaga maua: ≥ 835 MPa
• Malosiaga tensile: ≥ 980 MPa
• Elongation: ≥12%
• Fua faatatau o le fa'aitiitiga o le eria: ≥55%
• A'afiaga e mitiia ai le malosi: ≥ 78 J
• Mea Brinell Malosi: ≤ 269 (Aila uamea fa'afefeteina po'o le vevela maualuga)
• Fa'ata'ita'iga tele: 25mm

Faʻamatalaga o togafitiga vevela

• tineia muamua vevela vevela: 850 °C (Quenchant-suau'u)
• Fa'avevela vevela vevela: 600 °C (Quenchant–vai, suauu)

Sa fa'aaogaina i mea e mana'omia ai vaega o mea totino e tete'e maualuga ma lelei e fa'alavalava e pei o  axles mamafa, u'u, mea fa'amamafa mamafa, spindles, pine, studs, bolts, connects, sprockets, pinions, torsion bars, connecting rods. O nei u'amea u'amea maualuga tensile ua fa'aaogaina lautele i vaega e pei o le penisini kemikolo alamanuia, ta'avale, masini eletise ma isi auaunaga vevela maualuga.