Precipitation Hardening Steel

Type 17-4PH is a martensitic precipitation-hardening stainless steel that provides an outstanding combination of high strength, good corrosion resistance, good mechanical properties at temperatures up to 600ºF (316ºC), good toughness in both base metal and welds, and short time, low-temperature heat treatments that minimize warpage and scaling.

Specifications:

• Length: 1~ 8 meters
• Surface: Bright
• Length tolerance: 0/+50 mm

• Carbon: 0.070 max
• Manganese: 1.00 max
• Silicon: 1.00 max
• Chromium: 15.00-17.00
• Nickel: 3.00-5.00
• Copper: 3.00-5.00
• Columbium +Tantalum: 5 x Carbon min – 0.45 max
• Phosphorus: 0.040 max
• Sulfur: 0.030 max
• Iron: Balance

• Density: 0.280 lbs/in³, 7.80 g/cm³
• Electrical Resistivity: (microhm-cm):
• 68°F (20°C): 98
• Specific Heat: BTU/lb/°F (kJ/kg•K):
• 32-212°F (0-100°C): 0.11(0.46)
• Thermal Conductivity: BTU/hr/ft²/in/°F (W/m•K)
• At 300°F (149°C): 124 (17.9)
• At 900°F (482°C): 157 (22.6)
• Mean Coefficient of Thermal Expansion:in/in/°F (μm/m•K)
• 70- 200°F (21-93°C): 6.0 x 10^-6(10.8)
• 70- 600°F (21-315°C): 6.2x 10^-6(11.2)
• 70-800°F (21-427°C): 6.3x 10^-6(11.3)
• Modulus of Elasticity: ksi (MPa)
• 29.0 x 10³ (200 x 10³) in tension
• 11.2 x 10³ (78 x 10³) in torsion

Magnetic Permeability:

• Strongly ferromagnetic in all conditions