GB 38CrMoAlA GB/T 3078 Taw qhia
Peb lub tuam txhab tau tsim lub sijhawm ntev -kev sib raug zoo thiab kev sib raug zoo nrog Tuam Tshoj Hlau thiab Hlau Association, Hlau thiab hlau koom haum thiab hlau thiab hlau lag luam thoob plaws lub xyoo, xyuas kom meej cov khoom ntawm siab - zoo GB 38CrMoAlA GB / T 3078 steel thiab muab tus nqi nyiam. Peb GB 38CrMoAlA GB / T 3078 steel khoom raug xa tawm mus rau ntau tshaj 70 lub teb chaws thiab cheeb tsam txawv teb chaws thiab tau txais kev tshuaj xyuas zoo.
Daim ntawv thov:High quality structural steel txias kos hlau.
Thaum tshav kub kub kho:1516℃- 1131℃.
GB 38CrMoAlA GB/T 3078 Chemical Element
Rau GB 38CrMoAlA GB / T 3078 datasheet thiab GB 38CrMoAlA GB / T 3078 tshuaj muaj pes tsawg leeg, thov mus saib cov lus hauv qab no.
| Element | Min | Max | Zoo sib xws |
|---|---|---|---|
| C | 0.3500 | 0.4200 | - |
| Mn | 0.3000 | 0.6000 | - |
| Si | 0.1700 | 0.3700 | - |
| Ni | - | 0.4000 | - |
| Cr | 1.3500 | 1.6500 | - |
| Mo | 0.1500 | 0.2500 | - |
| Al | 0.7000 | 1.1000 | - |
| P | - | 0.0250 | - |
| S | - | 0.0250 | - |
| Si | 0.2000 | 0.4500 | - |
| Ni | - | 0.3000 | - |
| Cu | - | 0.2500 | - |
GB 38CrMoAlA GB/T 3078 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 -Heat-Kev Kho Mob | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 438 (Ntau dua lossis sib npaug) | 146 (Ntau dua lossis sib npaug) | 41 | 24 | 34 | Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam | 443 |
GB 38CrMoAlA GB/T 3078 Lub cev muaj zog
Lub cev lub cev ntawm GB 38CrMoAlA GB / T 3078 feem ntau yog qhia los ntawm cov qauv ntawm cov khoom siv hluav taws xob, thermal conductivity, thermal muaj peev xwm, coefficient ntawm thermal expansion, elasticity, poisson tus piv, ntom, 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 |
|---|---|---|---|---|---|---|---|
| 42 | - | - | 0.31 | - | |||
| 649 | 641 | - | 13.3 | 121 | - | ||
| 347 | - | 33 | 31.2 | 432 | 212 |
