Steel
materials and applications
Steel
Microfusion and CNC milling prototypes
The following are the characteristics of the most common steels used for the production of short runs through precision casting.
Features
average data of the steel materials obtained
In prototyping the combination of material and processing technique is one of the most complex choices. Performing a prototype almost always requires evaluations so that, for technicians’ use and consumption, the average characteristics of the materials obtained by prototype construction are given. These can be used to get an idea of technical and functional compliance.
| CATEGORIES | CORRESPONDING RULES | CHEMICAL ANALYSIS | MECHANICAL CHARACTERISTICS | |||||||||
| UNI | AISI | C% | Mn% | Si% | Cr% | Ni% | Mo% | R
N/mm² |
Rs
N/mm² |
A%
min. |
Durezza | |
| CEMENTATION
STEELS |
C10 | 1010 | 0,07÷0,12 | 0,3÷0,7 | <1,00 | (490)
(883) |
(=294) | (12) | HRC
55-62 |
|||
| 18NiCrMo5 | 0,15÷0,21 | 0,6÷0,9 | <1,00 | 0,7÷1,0 | 1,2÷1,5 | 0,15÷0,25 | (1230)
(1520) |
(=980) | (8) | HRC
58-65 |
||
| RECOVERY
STEELS |
C40 | 1040 | 0,37÷0,44 | 0,5÷0,8 | <1,00 | (700)
(840) |
(=490) | (15) | HRC
205-245 |
|||
| 39NiCrMo15 | 0,30÷0,38 | 0,3÷0,8 | <0,75 | 1,5÷1,8 | 3,5÷4,0 | 0,2÷0,4 | (1717)
(1962) |
(=1275) | (7) | HRC
50-55 |
||
| STEELS FOR
BEARINGS |
100Cr6 | 52100 | 0,95÷1,10 | 0,3÷0,5 | <0,75 | 1,4÷1,65 | HRC
=60 |
|||||
| STAINLESS
STEELS |
X5CrNi1810 | 304 | <0,08 | <1,50 | <2,00 | 18 ÷ 21 | 8 ÷ 11 | 481
min. |
206
min. |
35 | HRB
90max |
|
| X2CrNi1811 | 304L | <0,03 | <1,50 | <2,00 | 17 ÷ 21 | 8 ÷ 12 | 446
min. |
192
min. |
35 | HRB
86max |
||
| X5CrNiMo1712 | 316 | <0,08 | <1,50 | <2,00 | 18 ÷ 21 | 9 ÷ 12 | 2÷3 | 481
min. |
206
min. |
30 | HRB
90max |
|
| X2CrNiMo1712 | 316L | <0,03 | <1,50 | <1,50 | 17÷ 21 | 9 ÷ 13 | 2÷3 | 481
min. |
206
min. |
30 | HRB
86 max |
|
| X12Cr13 | 410 | 0,05÷0,15 | <1,00 | <1,50 | 11,5÷14 | <1,00 | <0,50 | 652
min. |
515
min. |
8 | HRB
90-140 |
|
| X30Cr13 | 420 | 0,2÷0,4 | <1,00 | <1,50 | 11,5÷14 | <1,00 | <0,50 | (785)
(980) |
(590)
min. |
(12) | HRC
21-30 |
|
| X8Cr17 | 430 | <0,1 | <1,00 | <1,00 | 16 ÷ 18 | (440)
(640) |
(245)
min. |
(18) | HB
192max |
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