17-4PH ANNEALED STAINLESS STEEL

ʻO Alloy 17-4 he chromium-copper precipitation hardening stainless steel i hoʻohana ʻia no nā noi e koi ana i ka ikaika kiʻekiʻe a me kahi pae haʻahaʻa o ka pale ʻana i ka corrosion. ʻO ia kekahi o nā māka paʻakikī paʻakikī i hoʻohana nui ʻia, no ka mea, ʻoi aku ka ikaika o ka paʻakikī a hiki i ka 572 ° F ʻoiai e hōʻike ana i ke kūpaʻa corrosion maikaʻi i nā kūlana mālama wela. Loaʻa i ka Alloy 17-4 ke kūpaʻa kūpono i ka ʻinoʻino o ka lewa a i ʻole nā ​​paʻakai ʻakika i hoʻoheheʻe ʻia kahi e like ai kona kūpaʻa ʻana me Alloy 304 a i ʻole 430. Hiki ke mālama ʻia ka huila 17-4 i nā wela like ʻole e hoʻomohala i nā ʻano waiwai. Hiki ke hoʻonui ʻia kona mau waiwai me ka mālama ʻana i ka wela kahi e loaʻa ai ka ikaika kiʻekiʻe loa a hiki i 180 ksi. ʻAʻole pono e hoʻohana ʻia ka huila 17-4 ma nā mahana ma luna o 572°F a i ʻole ma nā wela haʻahaʻa loa.

17-4 Ke kila kila
ʻO kēia martensitic precipitation hardening stainless steel ka hui pū ʻana o ka paʻakikī kiʻekiʻe a me ka ikaika ma hope o ka mālama wela kūpono. He ʻano ʻino a me ke kūpaʻa wela i ka Papa 304. ʻO nā huaʻōlelo ʻelua "Type 630" a me "17-4PH" pili i ka papa like.

Huina:

• Kalapona: 0.07 ka nui
• Manganese: 1.00 max
• Phosphorus: 0.040 ka nui
• Sulfur: 0.030 ka nui
• Silika: 1.00 ka nui
• Chromium: 15.00 - 17.50
• Nikela: 3.00 - 5.00
• Ke keleawe: 3.00 - 5.00
• Hao: Kaulike

Nā waiwai kino:

• Kekahi hehee: 2560 - 2625°F (1404 – 1440°C)
• Māmā: 0.282 paona/in3 / 7.8 g/cm3
• Modulus o ka Elasticity i ka U'i: 28.5 X 106 psi / 197 GPa

Nā Pono Mechanical:

• Kūlana: Hoʻoponopono ʻia (A)
• ʻO ka liʻiliʻi loa (psi): 160,000
• ʻO ka ikaika hua liʻiliʻi 0.2% offset (psi): 145,000
• % Elongation ma 2” maʻamau: 5%
• Paʻakiki: Rockwell B85

• Kūlana: Hardened + Aged (TH1050)
• ʻAno maʻamau (psi): 200,000
• ʻO ka ikaika maʻamau 2% offset (psi): 185,000
• % Ka lōʻihi ma ka 2": 8%
• Paʻakiki: Rockwell C35

• Kūlana: Kahiko (H1075)
• ʻAno maʻamau (psi): 175,000
• ʻO ka ikaika maʻamau 2% offset (psi): 165,000
• % Ka lōʻihi ma ka 2": 8%
• Paʻakiki: Rockwell C37

• Kūlana: ʻAged (H900)
• ʻAno maʻamau (psi): 210,000
• ʻO ka ikaika o ka hua maʻamau 2% offset (psi): 200,000
• % Ka lōʻihi ma ka 2": 7%
• Paʻakiki: Rockwell C45