SAE4340 Steel Round Bar ASTM4340 Steel Rod
Nā hiʻohiʻona
ʻO ka mea o ka pahu kila 4340 he kila kila kila.E like me ka German DIN steel grade 36CrNiMo4, French NF standard 40NCD3, Japanese JIS standard SNCM439, British BS standard 816M40, American SAE/ASTM4340, American UNS standard G43400，China Standard 40CrNiMoA.
ʻIke ʻia ʻo SAE4340 ma ke kila kila kila a i ʻole ke kila hui.Aia ka nickel i ke kila ma waena o 1.65 a me 2.00, nona ka ikaika kiʻekiʻe, ka paʻakikī, ka hiki ke paʻakikī, a me ka paʻa i ka wela.Eia nō naʻe, he kiʻekiʻe kona naʻau i nā kiko keʻokeʻo a me ka palupalu huhū.He maikaʻi ʻole ka heluhelu ʻana, e koi ana i ka wela kiʻekiʻe ma mua o ke kuʻi ʻana, hoʻomaha i ke koʻikoʻi ma hope o ka wili ʻana, a hoʻohana ma hope o ka hoʻoulu ʻana.
KULA: ASTM A29/A29M-2012 a i ʻole SAE J404
Hōʻike
| Kalapona C | 0.38~0.43 |
| Silicon Si | 0.15~0.35 |
| Manganese Mn | 0.60~0.80 |
| Sulfur S | ≤ 0.030 |
| ʻO Phosphorus P | ≤ 0.025 |
| Chromium Cr | 0.60~0.90 |
| Nikela | 1.65-2.00 |
| Ke keleawe Cu | ≤ 0.025 |
| Molybdenum Mo | 0.20-0.30 |
Nā waiwai mīkini
| Ka ikaika wili σ b (MPa) | ≥980 |
| Ka ikaika hua σ s (MPa) | ≥835 |
| Ka lōʻihi lōʻihi δ 5 (%) | ≥12 |
| Hoemi o ka āpana ψ (%) | ≥55 |
| Ka ikehu hopena Akv (J) | ≥ 78 |
| Waiwai oolea hopena α kv (J/cm2) | ≥98 |
Nā kikoʻī hoʻomaʻamaʻa wela
Hoʻopiʻiʻia ma 850 ℃, hoʻomaha kaʻaila;ʻO ka wela ma 600 ℃, hoʻomaʻalili ka wai, hoʻoluʻu ʻaila.
Palapala noi
Hoʻohana maʻamau no ka hana ʻana i nā ʻāpana koʻikoʻi me ka ikaika kiʻekiʻe a me ka plasticity maikaʻi, a no ka hana ʻana i nā ʻāpana koʻikoʻi me nā koi hana kūikawā ma hope o ka mālama ʻana i ka nitrating:
-ʻO nā mīkini kaumaha me nā kumu ukana kiʻekiʻe
-Ka huila me ke anawaena oi aku mamua o 250mm
-ʻO ke kumu rotor o kahi helikopter
-ʻO ke kumu turbine, nā lau, a me nā mea hoʻoili ukana kiʻekiʻe o kahi mīkini turbojet
- ʻO nā mea hoʻopaʻa Crankshaft, nā mīkini, etc.
Pūʻolo
1.Ma nā pūʻolo, kēlā me kēia pūʻolo kaumaha ma lalo o 3 tons, no ka liʻiliʻi o wahoke anawaena pa poepoe, kela puolo me 4 - 8 mau kaula kila.
2.20 kapuaʻi pahu i loaʻa ka ana, ka lōʻihi ma lalo o 6000mm
3.40 kapuaʻi pahu i loaʻa ka ana, ka lōʻihi ma lalo o 12000mm
4.By bulk moku, Freight uku haʻahaʻa e ka nui ukana, a nuiʻAʻole hiki ke hoʻouka ʻia nā nui kaumaha i loko o nā ipu hiki ke hoʻouna ʻia e ka ukana nui
Pūʻolo
ʻO ka hōʻoia maikaʻi
1. Koʻikoʻi e like me nā koi
2. Laʻana: Loaʻa ka laʻana.
3. Nā ho'āʻo: ho'āʻo paʻakai paʻakai/Tensile ho'āʻo / Eddy manawa / Chemical haku ho'āʻo e like me nā mea kūʻai mai noi
4. Palapala hōʻoia: IATF16949, ISO9001, SGS etc.
5. EN 10204 3.1 Hōʻoia
