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Qib 8.8, 10.9 & 12.9 Bolts thiab Screws: Pom Zoo Raw Materials rau High-Strength Fasteners
2026-06-23 IB
Kev xaiv cov khoom siv raw yog lub hauv paus ntawm kev tsim cov bolts muaj zog, cov ntsia hlau, hex bolts, thiab stud bolts. TS EN ISO 898-1 Kev ntsuas cov cuab yeej cuab yeej cuab tam rau metric fasteners - feem ntau yog Qib 8.8, Qib 10.9, thiab Qib 12.9. Txhua qib qhia qhov tsawg kawg nkaus tensile lub zog, tawm los lub zog, thiab hardness uas tsuas yog lub hom phiaj xaiv steel, ua ke nrog kev kho cua sov kom zoo, tuaj yeem ua tiav tas li.
Qib 8.8 Bolts & Screws - Nruab nrab-siab zog
Qib 8.8 fasteners (tsawg kawg tensile lub zog 800 MPa, yield ratio 0.80) yog cov feem ntau siv dav-lub hom phiaj fasteners thoob ntiaj teb. Lawv npog hex bolts, hex cap screws, carriage bolts, stud bolts, thiab tag nrho threaded screws rau steel siv, tsheb sib dhos, thiab machinery.
Cov ntaub ntawv pom zoo
- 35 # Medium-Carbon Steel - Haum rau me me-inch fasteners (≤ M16). Nqi-zoo, txaus hardenability rau Qib 8.8 tom qab quench-and-temper (Q&T).
- 45 # Medium-Carbon Steel - Qhov kev xaiv nrov tshaj plaws rau Qib 8.8 hex bolts thiab stud bolts. Zoo machinability, ruaj khov mechanical zog tom qab Q&T.
- 40Cr Alloy hlau - Txaus siab rau txoj kab uas hla loj dua bolts (M20+). Chromium ntxiv txhim kho hardenability thiab tensile uniformity hla ntu ntu.
Kev kho cua sov & kev siv
Quenching & Tempering (Q&T). Hom hardness ntau yam: 22-32 HRC. Daim ntaub ntawv: kev sib txuas steel qauv, tsheb chassis, tshuab dav dav, flanged pob qij txha, ntoo-rau-steel sib txuas.
Qib 10.9 Bolts & Screws — Siab zog
Qib 10.9 bolts thiab screws xa ib yam tsawg kawg nkaus tensile zog ntawm 1,040 MPa. Lawv tau teev nyob rau txhua qhov chaw uas yuav tsum tau muaj kev sib txuas, siab-clamping-force - los ntawm lub cav tsheb mus rau cov khoom siv hauv av hnyav. Cov ntaub ntawv khoom lag luam muaj xws li lub qhov (socket head cap screws), flanged hex bolts, thiab high-strength stud bolts.
Cov ntaub ntawv pom zoo
- 40Cr Alloy hlau - Standard workhorse rau Qib 10.9. Paub zoo hardenability, dav muaj, thiab ntawv pov thawj rau ISO 898-1 cov cai.
- 35CrMo Alloy hlau - Chromium-molybdenum steel nrog superior toughness thiab qaug zog kuj. Feem ntau rau bolts thiab screws nyob rau hauv dynamic loading.
- 42CrMo Alloy hlau - Cov ntsiab lus carbon ntau dua 35CrMo; muab zoo heev zog-toughness sib npaug rau loj-inch Qib 10.9 hex bolts.
- SCM435 (JIS) — Japanese Industrial Standard sib npaug rau 35CrMo. Siv dav hauv Asia-Pacific fastener mov chains; zoo sib xws.
Kev kho cua sov & kev siv
Quenching & Tempering (Q&T). Hom hardness ntau yam: 32-39 HRC. Daim ntaub ntawv: cav mounting bolts, ncua kev kawm ntawv thiab drivetrain fasteners, cua-turbine ntauwd bolts, hnyav kev sib txuas.
Qib 12.9 Bolts & Screws — Ultra-High Strength
Qib 12.9 yog cov cuab yeej zoo tshaj plaws hauv chav kawm rau metric fasteners (tsawg kawg tensile zog 1,220 MPa). Ultra-siab zog xav tau precision alloy steel nrog nruj tswj chemistry. Cov fasteners no - feem ntau lub qhov taub hau taub hau screws thiab tshwj xeeb kev lag luam bolts - yog siv nyob rau txhua qhov chaw muaj kev nyab xeeb margins thiab qaug zog lub neej yog tsis sib tham.
Cov ntaub ntawv pom zoo
- 42CrMo4 / 42CrMo Alloy hlau - Kev xaiv thoob ntiaj teb tus qauv rau Qib 12.9. Zoo heev hardenability, siab qaug zog, uniform hardness faib (39-44 HRC tom qab Q&T). Ua raws li ISO 898-1, DIN EN 10263, thiab ASTM cov lus qhia.
- SCM440 (JIS) — Japanese sib npaug rau 42CrMo4. Dominant nyob rau hauv East Asian manufacturing; superior nto tiav thiab qhov ntev tolerances rau lub qhov (socket cap screws).
- 35CrMoV Alloy Steel - Vanadium-enhanced rau txhim kho hnav tsis kam thiab creep zog. Xaiv rau cov ntawv thov kub lossis siab vibration fastener.
- 30CrNiMo8 Alloy hlau - Nickel-chromium-molybdenum steel rau huab-loading tej yam kev mob. Tshwj xeeb rau aerospace-nyob ib sab thiab tseem ceeb engineering bolts.
Kev kho cua sov & kev siv
Quenching & Tempering (Q & T) nrog nruj hardness tswj (39-44 HRC). Daim ntaub ntawv: disc nres caliper bolts, precision tshuab cuab yeej, tseem ceeb cov qauv thauj tog rau nkoj, lub taub hau hau hau screws (DIN 912 / ISO 4762), tshwj xeeb muaj fasteners.
Siv ceev: Qib vs. Cov khoom pom zoo
| Qib | Min. Tensile zog | Cov ntaub ntawv pom zoo | Hom Khoom Siv | Kev kho cua sov |
| 8.8 | 800 MPa | 35 # / 45 # Carbon Steel 40Cr alloy hlau | Hex Bolt, Hex Cap Screw, Carriage Bolt, Stud Bolt | Quenching & Tempering |
| 10.9 | 1,040 MPa | 40Cr, 35CrMo, 42CrMo SCM435 Alloy hlau | Socket Cap Screw, Flanged bolt, ntsia liaj qhov rooj | Quenching & Tempering |
| 12.9 | 1,220 MPa | 42CrMo4 / SCM440 35CrMoV alloy hlau | Qhov (socket Head Cap Screw), Industrial Fastener | Q&T (39–44 HRC tswj) |
Hais txog Fujirui Hlau - Professional Fastener Chaw Tsim Tshuaj & Exporter
Fujirui Hlau manufactures thiab xa tawm precision fasteners nrog rau lub zog siab bolts, hex screws, tus kheej-drilling screws, stud bolts, thiab ob-kawg studs thoob plaws Qib 8.8, 10.9, thiab 12.9. Kev kho qhov chaw: Dacromet, Ruspert, kub-dip galvanising, thiab zinc plating. Tag nrho cov khoom tau ntawv pov thawj rau ISO, DIN, thiab ASTM cov qauv, nrog rau tag nrho cov ntaub ntawv pov thawj (MTC) muaj.
