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Hardenable steel, resistant to oxidation and corrosion.
The high chromium content combined with low carbon provides a good resistance to corrosion, subject to surface being perfectly polished after heat treatment.
Product Details
Specification
Round bar | Diameter(mm) | Length(mm) | - |
Forged round bar：φ50~450 | 2000~6000 | - | |
Rolled round bar： φ10~80 | 2000~6000 | - | |
Flat bar | Thickness(mm) | Width(mm) | Length(mm) |
Forged plate：20~300 | 50~710 | 2000~6000 | |
Rolled plate： 10~65 | 155~610 | 2000~6000 |
Chemical composition （%）
Standard | Steel Grade | C | Si | Mn | P | S | Cr | Mo | other |
DIN | 1.2316 | 0.33-0.43 | ≤1.00 | ≤1.00 | 0.030 | 0.030 | 15.0-17.0 | 1.00-1.30 | Ni≤1.00 |
ASTM | 3Cr17Mo | - | - | - | - | - | - | - | - |
GB | - | - | - | - | - | - | - | - | - |
Trade of steel and characteristics:
Hardenable steel, resistant to oxidation and corrosion.
The high chromium content combined with low carbon provides a good resistance to corrosion, subject to surface being perfectly polished after heat treatment.
Applications:
Moulds for corrosive thermoplastic material. Chromizing is not necessary.
These two grades allow very high polish.
They are generally supplied pretreated to 800-1100 N/mm2 according to request.
Heat treatment(if necessary):
Heat treatment:
Annealing: Temperature: 780-800℃
Holding time: 4-6H; Slow surface cooling
Hardness after annealing: max.250HB
Stress relieving: Temperature: appr.650℃
Holding time: 1-2H; Slow surface cooling
Hardening: Temperature:1020-1050℃
Quenching: oil or polymer(interrupt at appr.120-150℃).
Hardness obtainable: appr.52HRC
Tempering: According to diagram, to values between 800 and 1100 N/mm2.
Nitriding: Possible with appropriate tempering;
However, this treatment reduces resistance to corrosion.
