〔56〕灰口铸铁
（Gray Iron Castings)
标准代号	规格号码	记号	拉伸试验Tensile requirements				硬度（HB)
			厚度（mm)	降伏強度（Mpa)	抗拉强度（MPa)	伸长率（%）
CNS	2472	FC100	≧30	-	≧100	-	≦201

GB	9439	HT-100	-	-	≧100	-	-

JIS	G5501	FC100	≧30	-	≧100	-	≦201

ASTM	A48	No.20	≧30.5	-	≧138	-	-

DIN	1691	GG-10	≧30	-	≧100	-	-


CNS	2472	FC150	≧30	-	≧150	-	≦212

GB	9439	HT-150	-	-	≧150	-	≦212

JIS	G5501	FC150	≧30	-	≧150	-	-

ASTM	A48	No.25	≧30.5	-	≧172	-	-

DIN	1691	GG-15	≧30	-	≧150	-	-


CNS	2472	FC200	≧30	-	≧200	-	≦223

GB	9439	HT-200	-	-	≧200	-	-

JIS	G5501	FC200	≧30	-	≧200	-	≦223

ASTM	A48	No.30	≧30.5	-	≧207	-	-

DIN	1691	GG-20	≧30	-	≧200	-	-


CNS	2472	FC-250	≧30	-	≧245	-	≦241

GB	9439	HT-250	-	-	≧250	-	-

JIS	G5501	FC-250	≧30	-	≧245	-	≦241

ASTM	A48	No.35	≧30.5	-	≧241	-	-

ASTM	A48	No.35	≧30.5	-	≧276	-	-

DIN	1691	GG-25	≧30	-	≧250	-	-


CNS	2472	FC300	≧30	-	≧300	-	≦262

GB	9439	HT-300	-	-	≧300	-	-

JIS	G5501	FC300	≧30	-	≧300	-	≦262

ASTM	A48	No.45	≧30.5	-	≧310	-	-

DIN	1691	GG-30	≧30	-	≧290	-	-


CNS	2472	FC350	≧30	-	≧350	-	≦277

GB	9439	HT-350	-	-	≧350	-	-

JIS	G5501	FC350	≧30	-	≧350	-	≦277

ASTM	A48	No.50	≧30.5	-	≧345	-	-

DIN	1691	GG-35	≧30	-	≧340	-	-


ASTM	A48	No.60	≧30.5	-	≧414	-	-

DIN	1691	GG-40	≧30	-	≧390	-	-