a Cu ≤ 0.50 %; Ni ≤ 0.50 %; Cr ≤ 0.50 % a me Mo ≤ 0.15 %.

b No kēlā me kēia hoʻemi ʻana o 0.01 % ma lalo o ka manaʻo kiʻekiʻe i ʻōlelo ʻia no ke kalapona, hiki ke hoʻonui ʻia he 0.05 % ma luna o ka ʻike nui loa no Mn, a hiki i ka 1.65 % kiʻekiʻe no nā māka ≥ L245 a i ʻole B, akā ≤ L360 a i ʻole X52; a hiki i ka 1.75 % kiʻekiʻe no nā māka > L360 a i ʻole X52, akā < L485 a i ʻole X70; a hiki i ka 2.00 % kiʻekiʻe no ka Papa L485 a i ʻole X70.

c Inā ʻaʻole i ʻae ʻia, Nb + V ≤ 0.06 %.

d Nb + V + Ti ≤ 0.15 %.

e Inā ʻaʻole i ʻae ʻia.

f Inā ʻaʻole i ʻae ʻia, Nb + V + Ti ≤ 0.15 %.

g ʻAʻole ʻae ʻia ka hoʻohui ʻana o B a me ke koena B ≤ 0.001 %.

Papa Paipu

i hea

C ʻo 1940 no ka helu ʻana me ka hoʻohana ʻana i nā ʻāpana SI a me 625,000 no ka helu ʻana me nā ʻāpana USC;

AʻO xc ka ʻāpana hoʻāʻo tensile kūpono, i hōʻike ʻia ma nā millimeters huinaha (inches square), penei:

1) no nā ʻāpana hoʻāʻo pōʻai kea, 130 mm2 (0.20 in.2) no 12.7 mm (0.500 in.) a me 8.9 mm (0.350 in.) nā ʻāpana hōʻike anawaena; 65 mm2 (0.10 in.2) no 6.4 mm (0.250 in.) anawaena mau apana hoao;

2) no nā ʻāpana hoʻāʻo piha, ʻo ka liʻiliʻi o a) 485 mm2 (0.75 in.2) a me b) ka ʻāpana cross-sectional o ka ʻāpana hoʻāʻo, i loaʻa me ka hoʻohana ʻana i ke anawaena o waho a me ka mānoanoa pā o ka paipu, hoʻopuni ʻia i ka 10 mm2 kokoke loa (0.01 in.2);

3) no nā ʻāpana hoʻāʻo ʻāwī, ʻoi aku ka liʻiliʻi o a) 485 mm2 (0.75 in.2) a me b) ka ʻāpana keʻa o ka ʻāpana hoʻāʻo, i loaʻa me ka hoʻohana ʻana i ka laulā kikoʻī o ka ʻāpana hoʻāʻo a me ka mānoanoa pā o ka paipu. , hoʻopuni ʻia i ka 10 mm2 kokoke loa (0.01 in.2);

U ʻo ia ka ikaika tensile haʻahaʻa i ʻōlelo ʻia, i hōʻike ʻia ma nā megapascals (paona no ka ʻīniha square).