55簡(jiǎn)介
China GBT Structure Steel 55，及該型號(hào)鋼材的基本信息、化學(xué)元素成分、機(jī)械性能、力學(xué)性能、熱處理溫度、同等型號(hào)參照表等。
基本信息：
| 分類(lèi) |
種類(lèi) |
型號(hào) |
標(biāo)準(zhǔn) |
國(guó)家 |
應(yīng)用 |
|---|
| Steel Grades |
|
55 |
GBT |
China |
China structural steel and alloy steel |
化學(xué)成分信息(mass fraction)(wt.%) of the 55：
| 元素名稱(chēng) |
含量比例值 |
|---|
| C |
0.52-0.60 |
| Si |
0.17-0.37 |
| Mn |
0.50-0.80 |
| P |
0.035 |
| S |
0.035 |
| Cr |
0.25 |
| Ni |
0.3 |
機(jī)械性能信息：
| 屈服強(qiáng)度Rp0.2（MPa） |
抗拉強(qiáng)度Rm（MPa） |
沖擊率 |
伸長(zhǎng)率 |
斷面收縮率 |
熱處理狀態(tài) |
布氏硬度（HBW） |
|---|
| 948 (≥) |
111 (≥) |
13 |
32 |
44 |
Solution and Aging, Annealing, Ausaging, Q+T,etc |
242 |
物理性質(zhì)信息：
| 溫度 |
彈性模量 |
系數(shù) |
熱導(dǎo)率 |
比熱容量 |
比電阻率 |
密度 |
加權(quán)系數(shù) |
|---|
| 23 |
- |
- |
|
|
0.32 |
- |
|
| 715 |
982 |
- |
22.3 |
433 |
|
- |
|
| 967 |
- |
22 |
13.2 |
|
|
223 |
441 |
熱處理信息：
| 熱處理溫度區(qū)間 |
|---|
| Heat treated : 1157°C - 1929°C |
對(duì)照表（同等等級(jí)）信息：
| 型號(hào) |
標(biāo)準(zhǔn) |
國(guó)家 |
應(yīng)用 |
|---|
| Q255 A |
|
China |
Engineering and welding |
| Q255 B |
|
China |
Engineering and welding |
| SM55 |
|
China |
Plastic mould with flat steel |
| 1.1554 |
|
|
|
| C55W |
|
|
|
| X155CrVMo12-1 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2550 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.2552 |
DIN |
Germany |
Cold working alloy tool steel |
| 55NiCrMoV6 |
DIN |
Germany |
Cold working alloy tool steel |
| 55NiCr10 |
DIN |
Germany |
Cold working alloy tool steel |
| 1.3255 |
DIN |
Germany |
High-speed tool steel |
| 1.3355 |
DIN |
Germany |
High-speed tool steel |
| SKH55 |
JIS |
Japan |
W-phase system high-speed tool steel |
| 55CrNiMoV 4 |
AFNOR |
France |
Carbide for cutting tools |
| 55CrNiMoV 4 |
AFNOR |
France |
Carbide for cutting tools |
| 55NiCrMoV7 |
|
|
|
| 55NiCrMoV7 |
|
|
|
| SS14:2550 |
SS |
Sweden |
Carbide for cutting tools |
| 32CrMoV12-28 |
ISO |
ISO |
Carbide for cutting tools |
| 32CrMoV12-28 |
ISO |
ISO |
Carbide for cutting tools |
