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Home > Standard > 1.4748, DIN X85CrMoV18-2 standard

1.4748, DIN X85CrMoV18-2

1.4748, DIN X85CrMoV18-2 standard Download, We provide the main countries around the ISO standard download, including: AISI(US),UNS(US),SAE(US),ASTM(US),AMS(US),ASME(US),MIL(US),FED(US),DIN(DEU),JIS(JPN),AFNOR(FR),B.S.(UK),SS(SWE),UNI(ITA).

Production specification

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1.4748, DIN X85CrMoV18-2

Designation by Standards

 

Brand Name LH No. Mat. No. DIN EN AISI
PK329 329 1.4748 X85CrMoV18-2 - -



Chemical Composition (in weight %)

C Si Mn Cr Mo Ni V W Others
0.85 max. 1.00 max. 1.50 17.50 2.25 - 0.45 - -



Description
The martensitic chromium-molybdenum-vanadaium steel PK329 is corrosion and heat resistant, and it has good mechanical properties at operating temperatures up to 700oC. This steel has good wear resistance.

Applications
Intake valves for heavy duty engines and exhaust valves for medium service requirements. Valve seat inserts.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 226
Density [g/cm3]: 7.7
Thermal conductivity [W/m.K]: 21.0
Electric resistivity [Ohm mm2/m]: 0.65
Specific heat capacity[J/g.K]: 0.50
Magnetisable: Yes

Coefficient of Linear Thermal Expansion 10-6 oC-1

20-100oC 20-300oC 20-500oC 20-700oC
10.9 11.5 11.7 11.9



Soft Annealing
Heat to 820-860oC, cool slowly in air.

Hardening
Harden from a temperature of 1050-1080oC followed by oil quenching.

Tempering
Tempering temperature: 700-750oC

Mechanical properties at at ambient temperature

Condition: Tempered
Hardness: 355 HB
0.2% proof stress: 800 N/mm2
Tensile strength: 1000-1200 N/mm2
Elongation: 7%
Reduction: 12%

Condition: Hardened
Hardness: 296 HB
0.2% proof stress: 800 N/mm2
Tensile strength: 1000-1200 N/mm2
Elongation: 7%
Reduction: 12%

0.2% Proof Stress in N/mm2 vs. Temperature in oC

500oC 550oC 600oC 650oC 700oC 750oC 800oC
500 370 280 170 120 80 -



Tensile Strength in N/mm2 vs. Temperature in oC

500oC 550oC 600oC 650oC 700oC 750oC 800oC
550 400 300 230 180 140 -

Forging
Hot forming temperature: 1100-900oC, slow cooling.

Machinability
No data.

Corrosion Resistance
Good hot corrosion and oxidation resistance up to 750oC, also in presence of combustion gases from aggressive fuels.

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