30CrMnMoRE (603) is a high-strength and high-toughness steel plate, 30CrMnMoRE is a military steel plate, 603 is a steel plate code, and 30CrMnMoRE armored bulletproof steel is smelted in a converter and outside the furnace or smelted in an electric arc furnace, and strictly implements the national military standard.
30CrMnMoRE (603) steel plate smelting method: using converter plus external refining or electric arc furnace smelting.
30CrMnMoRE (603) steel plate delivery status: high temperature tempered delivery.
30CrMnMoRE (603) steel heat treatment requirements:
| Grade | Code | Quenching temperature ℃ | Holding time min/mm | Cooling medium | Tempering temperature | Holding time min/mm | Cooling medium |
| 30CrMnMoRE | 603 | 900-930 | 2-3 | Water | 600-630 | 3-5 | Water |
30CrMnMoRE (603) steel plate chemical element analysis, chemical composition:
C: 0.26-0.32
Si: 0.30-0.60
Mn: 1.05-1.55
P:≤0.025
S:≤0.020
Cr: 0.80-1.30
Mo: 0.60-0.80
RE: 0.07-0.12
Mechanical properties of 30CrMnMoRE (603) steel plate:
| Grade | Code | Thickness (mm) | Brinell hardness HBS10/3000 | |||
| Specimen in delivery state | Quenching and tempering fracture pattern | |||||
| Hardness value | Indentation diameter mm | Hardness value | Indentation diameter mm | |||
| 30CrMnMoRE | 603 | 30-80 | ≤269 | ≥3.7 | 341-285 | 3.3-3.6 |
| 100 | ≤269 | ≥3.7 | 341-269 | 3.3-3.7 | ||
Impact energy of 30CrMnMoRE steel plate:
The 30CrMnMoRE steel plate is subjected to the V-type Charpy impact test at -40℃ in the quenched and tempered state, and the impact absorption energy Akv (the average value of the two transverse tests) should not be less than 30J, and the impact absorption result of the 603 steel plate is not used as the basis for delivery.
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