★ 钢材的基本公式
角钢=边长*边厚*0.015 |
焊管/无缝钢管=(外径-壁厚）*壁厚*0.02466 |
方管=边长*4*0.00785=周长除以3.14 |
矩形管=（长+宽）*2*壁厚*0.00785 |
扁钢=宽度*壁厚*0.00785 |
镀锌扁钢=宽度*壁厚*0.00785*1.06 |
板材=长度*宽度*厚度*0.00785 |
花纹板=[厚度*0.0785+0.3]*长度*宽度 |
六角钢=对边*对边距离*0.0065 |
八角钢=对边*对边距离*0.0065 |
不锈钢板=长度*宽度*厚度*7.93 |
圆钢重量（公斤）=0.00617×直径×直径×长度 |
方钢重量（公斤）=0.00785×边宽×边宽×长度 |
六角钢重量（公斤）=0.0068×对边宽×对边宽×长度 |
八角钢重量（公斤）=0.0065×对边宽×对边宽×长度 |
螺纹钢重量（公斤）=0.00617×计算直径×计算直径×长度 |
角钢重量（公斤）=0.00785×（边宽+边宽-边厚）×边厚×长度 |
扁钢重量（公斤）=0.00785×厚度×边宽×长度 |
钢管重量（公斤）=0.02466×壁厚×（外径-壁厚）×长度 |
★ 六方体体积的计算
公式 s20.866×H/m/k 即对边×对边×0.866×高或厚度
★ 各种钢管(材)重量换算公式
钢管的重量=0.25×π×(外径平方-内径平方)×L×钢铁比重
其中：π = 3.14 L=钢管长度 钢铁比重取7.8 所以，钢管的重量=0.25×3.14×(外径平方-内径平方)×L×7.8 * 如果尺寸单位取米（M）,则计算的重量结果为公斤（Kg）
钢的密度为：7.85g/cm3（注意：单位换算）
钢材理论重量计算
钢材理论重量计算的计量单位为公斤（ kg ）。其基本公式为：
W（重量，kg ）=F(断面积 mm2)×L(长度，m)×ρ(密度，g/cm3)×1/1000
★ 各种钢材理论重量计算公式如下：
名称（单位） |
圆钢 盘条（kg/m） |
计算公式 |
W= 0.006165 ×d×d |
符号意义 |
d = 直径mm |
计算举例 |
直径100 mm 的圆钢，求每m 重量。每m 重量= 0.006165 ×1002=61.65kg |
钢材图片 |
|
名称（单位） |
螺纹钢（kg/m） |
计算公式 |
W= 0.00617 ×d×d |
符号意义 |
d= 断面直径mm |
计算举例 |
断面直径为12 mm 的螺纹钢，求每m 重量。每m 重量=0.00617 ×12 2=0.89kg |
钢材图片 |
|
名称（单位） |
方钢（kg/m） |
计算公式 |
W= 0.00785 ×a ×a |
符号意义 |
a= 边宽mm |
计算举例 |
边宽20 mm 的方钢，求每m 重量。每m 重量= 0.00785 ×202=3.14kg |
钢材图片 |
|
名称（单位） |
扁钢 （kg/m） |
计算公式 |
W= 0.00785 ×b ×d |
符号意义 |
b= 边宽mm d= 厚mm |
计算举例 |
边宽40 mm ，厚5mm 的扁钢，求每m 重量。每m 重量= 0.00785 ×40 ×5= 1.57kg |
钢材图片 |
|
名称（单位） |
六角钢 （kg/m） |
计算公式 |
W= 0.006798 ×s×s |
符号意义 |
s= 对边距离mm |
计算举例 |
对边距离50 mm 的六角钢，求每m 重量。每m 重量= 0.006798 ×502=17kg |
钢材图片 |
|
名称（单位） |
八角钢 （kg/m） |
计算公式 |
W= 0.0065 ×s ×s |
符号意义 |
s= 对边距离mm |
计算举例 |
对边距离80 mm 的八角钢，求每m 重量。每m 重量= 0.0065 ×802=41.62kg |
名称（单位） |
等边角钢 （kg/m） |
计算公式 |
= 0.00785 ×[d （2b – d ）+0.215 （R2 – 2r 2 ）] |
符号意义 |
b=边宽 d=边厚 R=内弧半径 r=端弧半径 |
计算举例 |
求20 mm×4mm 等边角钢的每m 重量。从冶金产品目录中查出4mm×20 mm等边角钢的R为3.5，r为1.2，则每m 重量=0.00785×[4×2×20–4）+0.215×（3.52–2×1.22）]=1.15kg |
钢材图片 |
 |
名称（单位） |
不等边角钢 （kg/m） |
计算公式 |
W=0.00785×[d（B+b–d）+0.215（R2–2r2）] |
符号意义 |
B=长边宽 b=短边宽 d=边厚 R=内弧半径 r=端弧半径 |
计算举例 |
求30mm×20mm×4mm 不等边角钢的每m 重量。从冶金产品目录中查出30×20×4不等边角钢的R为3.5，r 为1.2，则每m 重量= 0.00785×[4×（30+20 –4）+0.215×（3.52–2 ×1.22）]=1.46kg |
钢材图片 |
|
常 用 数 据 |
|
1 米(m)＝ 3.281 英尺 |
1 英寸＝ 25.4 毫米 |
1 磅＝ 0.4536 公斤 |
1 盎司＝ 28.3 克 |
1 公斤力＝ 9.81 牛顿 |
1 磅力＝4.45 牛顿 |
1 兆帕=145.161 磅 / 英寸 |
钢的比重(密度）：7.8g/cm |
不锈钢比重（密度）：7.78g/cm |
锌比重（密度）：7.05g/cm |
铝的比重（密度）：2.7g/cm |
|
★ 几种金属型材理论重量简易计算公式：
1、 角钢：每米重量=0.00785×（边宽+边宽—边厚）×边厚
2、 管材：每米重量=0.02466×壁厚×（外径—壁厚）
3、 圆钢：每m重量=0.00617×直径×直径 (螺纹钢和圆钢相同）
4、 方钢：每m重量=0.00786×边宽×边宽
5、 六角钢：每m重量=0.0068×对边直径×对边直径
6、 八角钢：每m重量=0.0065×直径×直径
7、 等边角钢：每m重量=边宽×边厚×0.015
8、 扁钢：每m重量=0.00785×厚度×宽度
9、 无缝钢管：每m重量=0.02466×壁厚×(外径-壁厚)
10、电焊钢：每m重量=无缝钢管
11、钢板：每㎡重量=7.85×厚度
12、黄铜管：每米重量=0.02670×壁厚×（外径-壁厚）
13、紫铜管：每米重量=0.02796×壁厚×（外径-壁厚)
14、铝花纹板：每平方米重量=2.96×厚度
15、有色金属密度：紫铜板8.9 黄铜板8.5 锌板7.2 铅板11.37
16、有色金属板材的计算公式为：每平方米重量=密度×厚度
17、方管: 每米重量=(边长+边长)×2×厚×0.00785
18、不等边角钢 ：每米重量=0.00785×边厚(长边宽+短边宽--边厚)
19、工字钢 ：每米重量=0.00785×腰厚[高+f（腿宽-腰厚）]
20、槽钢：每米重量=0.00785×腰厚[高+e（腿宽-腰厚）]
备注：
1、角钢、工字钢和槽钢的准确计算公式很繁，表列简式用于计算近似值。
2、f值：一般型号及带a的为3.34，带b的为2.65，带c的为2.26。
3、e值：一般型号及带a的为3.26，带b的为2.44，带c的为2.24。
4、各长度单位均为毫米（mm)
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很详细；支持楼主贡献。学习了。可以收藏一下。
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