A 693 Type 634 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 693 Type 634

SAE A 693 Type 634

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This page is mainly introduced the A 693 Type 634 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 693 Type 634,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
  • Steel Garde:A 693 Type 634
  • Type:Stainless Steels
  • Country:USA
  • Standard:SAE
  • Standard Number:
    ITEM Standard Number Descriptions
    1 A 693 (2006) Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
  • Metallographic Structure:Precipitation-Hardening
  • Application:Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.10  0.15
Mn 0.50  1.25
Si   0.50
P   0.04
S   0.03
Cr 15.00  16.00
Ni 4.00  5.00
Mo 2.50  3.25
N 0.07  0.13

Mechanical Properties

Tensile strength 756~874 σb/MPa
Yield Strength 727 σ 0.2 ≥/MPa
Elongation 64 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 697~832 -
HRC 30 -

Physical Properties

Thermal expansion 35-87 e-6/K
Thermal conductivity 14-53 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 0110-1534 째C
Density 0473-0699 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
A 693 Type 634 Stainless Steels Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download