ASTM A487 Qib 4 Chav Kawm D ASTM A487 / A487M Kev Taw Qhia
A487 Qib 4 Class D steel ntawv, A487 Qib 4 Chav Kawm D steel density, A487 Qib 4 Chav Kawm D qib, A487 Qib 4 Chav Kawm D specification, A487 Qib 4 Chav Kawm D chemistry, A487 Qib 4 Chav Kawm D sib npaug, A487 Qib 4 Chav Kawm D steel sib npaug, A487 Qib Lub zog muaj zog, A487 Qib 4 Qib D steel phaj tuab daim ntawv, ASTM A487 Qib 4 Chav Kawm D ASTM A487 / A487M lub cev muaj zog, Cov Khoom Siv Hluav Taws Xob ntawm ASTM A487 Qib 4 Chav Kawm D ASTM A487 / A487M Hlau
Daim ntawv thov:Compressed hlau casting.
Thaum tshav kub kub kho:1596 degree - 1457 degree .
ASTM A487 Qib 4 Chav Kawm D ASTM A487 / A487M Chemical Element
Carbon, Silicon, Manganese, Phosphorus, Sulfur yog cov ntsiab lus tseem ceeb hauv ASTM A487 Qib 4 Chav Kawm D ASTM A487 / A487M.
Cov pa roj carbon monoxide yog qhov tseem ceeb tshaj plaws hardening nyob rau hauv steel.
Silicon pab txhawb lub zog. Zoo li manganese, silicon yog siv los tswj lub zog ntawm cov hlau thaum lub sij hawm tsim cov hlau.
Manganese yog qhov tseem ceeb ntawm austenite stabilizing cov ntsiab lus pab txhawb kev tsim cov qauv kev ntxhib los mos thiab ua kom muaj zog, lub zog thiab hnav tsis kam.
Phosphorus yog ib qho teeb meem. Txo cov plasticity thiab toughness ntawm steel thiab tshwm txias brittleness. Nws tuaj yeem txhim kho lub zog ntawm cov hlau, thiab txhim kho cov atmospheric corrosion stability. Cov ntsiab lus yuav tsum txwv tsawg dua 0.05%.
Feem ntau cov sulfur yog ib qho teeb meem, uas ua rau kub brittleness ntawm steel siab, thiab cov ntsiab lus ntawm sulfur yog txwv tsis pub tsawg tshaj li 0.05%.
| Element | Min | Max | Zoo sib xws |
|---|---|---|---|
| C | - | 0.3000 | - |
| Mn | - | 1.0000 | - |
| P | - | 0.0350 | - |
| S | - | 0.0350 | - |
| Si | - | 0.8000 | - |
| Ni | 0.4000 | 0.8000 | - |
| Cr | 0.4000 | 0.8000 | - |
| Mo | 0.1500 | 0.3000 | - |
| Cu | - | 0.5000 | - |
| V | - | 0.0300 | - |
| W | - | 0.1000 | - |
| Lwm tus tag nrho | - | 0.6000 | - |
| S | - | 0.0450 | - |
| P | - | 0.0400 | - |
| Lwm yam | - | 0.6000 | - |
ASTM A487 Qib 4 Chav Kawm D ASTM A487 / A487M Mechanical Properties
| Yield Rp0.2(MPa) |
Tensile Rm(MPa) |
Kev cuam tshuam KV/Ku (J) |
Elongation A (%) |
Kev txo qis hauv ntu ntu ntawm pob txha Z (%) |
Raws li-kub-kho mob | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 649 (Ntau dua lossis sib npaug) | 133 (Ntau dua lossis sib npaug) | 24 | 31 | 43 | Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam | 143 |
ASTM A487 Qib 4 Chav Kawm D ASTM A487 / A487M Lub cev muaj zog
Lub cev muaj zog ntawm ASTM A487 Qib 4 Chav Kawm D ASTM A487 / A487M feem ntau npog cov qauv ntawm elasticity, coefficient ntawm thermal expansion, thermal conductivity, tshwj xeeb thermal muaj peev xwm, hluav taws xob tsis kam, qhov ntom ntom, poisson tus piv, thiab lwm yam.
| Kub (degree) |
Modulus ntawm elasticity (GPa) |
Lub ntsiab lus coefficient ntawm thermal expansion 10-6/( degree ) ntawm 20 (degree) thiab | Thermal conductivity (W / m· degree) |
Tshwj xeeb thermal muaj peev xwm (J / kg · degree) |
Tshwj xeeb hluav taws xob resistivity (Ω mm² / m) |
Qhov ntom (kg/dm³) |
Poisson tus coefficient, ν |
|---|---|---|---|---|---|---|---|
| 13 | - | - | 0.22 | - | |||
| 482 | 192 | - | 31.3 | 312 | - | ||
| 534 | - | 13 | 13.2 | 232 | 342 |
