Cov cuab yeej qeb

Kev ntsuas tshwj xeeb

AISI304 (Austenitic)

AISI316 (AUSTENITIC)

AISI440C (MARENSITIC)

AISI430 (Ferritic)

Kuaj Tus Qauv

Kaifeng Tswb Ntau Lawm Tswj Yuav Tsum

Corrosion Kuj

Kev nruab nrab ntsev txau (5% nacl, 35 degree)

Ntau dua los yog sib npaug rau 48h (tsis muaj xeb liab)

Ntau dua los yog sib npaug rau 72h (tsis muaj pting)

Ntau dua los yog sib npaug rau 24h (me ntsis xeb tso cai)

Ntau dua los yog sib npaug rau 36H (tsis muaj xeb liab)

ASTM B117

每批次抽样 1% 进行 72h 盐雾测试, 316 材质需额外通过乙酸盐雾测试 (ASTM G85)

Intergranular corrosion tsis kam

Hla (65% hnoo₃ xeem)

Hla (65% hnoo₃ xeem)

Ua tsis tiav (siab c cov ntsiab lus)

Hla (qis c)

ASTM A262 Txuj Ci C

304L/316L 材质强制进行晶间腐蚀测试,不合格批次直接报废

Pitting corrosion tiv (pren¹)

~18

~24

~20

~16

ISO 10289

316 材质 Pren 值 Muaj ntau dua lossis sib luag rau 23, 确保海洋环境抗点蚀能力

Cov Khoom Siv Lub Cev

Ntom ntom (g / cmÃ, 25 degree)

7.93

8.00

7.85

7.70

ATM D792

成品密度偏差 tsawg dua lossis sib npaug rau ± 0.02 g / cm³, 避免材质不纯

Sib Nqus Khoom (20 Qib)

Tsis - sib nqus

Tsis - sib nqus

Muaj hlau nplaum muaj zog heev

Tsis muaj zog sib nqus

ASTM A342

304/316 材质磁导率 Tsawg dua lossis sib npaug rau 1.01 (精密电子设备专用批次)

Thermal nthuav tawm coefficient (10⁻⁶ / degree, 20-100 degree)

16.9

16.0

11.5

10.4

ASTM E228

(如 (高温应用批次 Ntau dua lossis sib npaug nrog 300 degree) 需提供热膨胀曲线

Thermal conductivity (w / (MEX K), 25 degree)

16.2

15.9

24.2

26.8

ASTM D5470

导热系数偏差 Tsawg dua lossis sib npaug rau ± 0.5 w / (map k), 保证散热稳定性

Kev ua tau zoo

Tshuab txheeb ze (txheeb ze rau 1018 hlau)

60%

55%

40%

70%

Iso 3685

440C 材质切削加工时采用专用冷却油,避免加工硬化

Muaj peev xwm (tus nqi txias

Ntau dua los yog sib npaug rau 95% (tsis muaj kev tawg)

Ntau dua los yog sib npaug rau 90% (tsis muaj kev tawg)

Tsawg dua los yog sib npaug rau 75% (yooj yim tawg)

Ntau dua los yog sib npaug rau 85% (tsis muaj kev tawg)

Astm E290

304 / 304L 冷镦成型压力控制在 180-200 MPa, 降低废品率

Cua Sov Kho Kev Kho Cua Sov

Yooj yim (daws annealing)

Yooj yim (daws annealing)

Complex (quenching + tempering)

Yooj yim (annealing)

ASTM A959

440c 热处理温度波动 tsawg dua lossis sib npaug ntawm ± 2 degree, 确保硬度均匀性

Kev ua saum npoo

Nto roughness (RA, μm)

Tsawg dua los yog sib npaug rau 0.02

Tsawg dua los yog sib npaug rau 0.02

Tsawg dua los yog sib npaug rau 0.01

Tsawg dua los yog sib npaug rau 0.03

ASTM B466

成品表面粗糙度 100% 通过激光轮廓仪检测,超差品返工

Deg passivation zaj duab xis tuab (NM)

8-12

10-15

6-10

7-11

ATM A967

316 材质钝化后膜厚 材质钝化后膜厚 ntau dua los yog sib npaug rau 12nm, 提升耐腐蚀寿命

Kev sib txhuam coefficient (qhuav sib txhuam, vs 45 # steel)

0.55-0.60

0.53-0.58

0.48-0.52

0.58-0.63

ASTM G133

高精密轴承用 440C 球摩擦系数 tsawg dua lossis sib npaug rau 0.50, 需通过摩擦磨损试验机验证