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SAE F 837 Class A1-70 S30300 Details

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F 837 Class A1-70 S30300 Application:Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Category Type Grade Microstructure Designations
Grades Stainless Steels F 837 Class A1-70 S30300 Austenite USA - SAE , F 837M (2002) - Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Chemical composition(wt.%) of F 837 Class A1-70 S30300 grade: F 837M (2002)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Si - 1.00
Mn - 2.00
P - 0.2
S 0.15 -
Cr 17.0 19.0
Ni 8.00 10.0
Mo - 0.60
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Mechanical properties of grade F 837 Class A1-70 S30300 F 837M (2002)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
631 (≥) 247 (≥) 12 11 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical properties of grade F 837 Class A1-70 S30300 F 837M (2002)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
199 (≥) 332 (≥) 14 14 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 234
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
395 991 575

F 837 Class A1-70 S30300 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
GH3030 GB China
Classification and designation for superalloys and high temperature intermetallic materials
GH3039 GB China
Classification and designation for superalloys and high temperature intermetallic materials
303 YB USA
Stainless Steel Billets and Bars for Forging
A 314 303 SAE USA
Stainless Steel Billets and Bars for Forging
A 473 303 SAE USA
Stainless Steel Forgings
A 581 Type 303 SAE USA
Free-Machining Stainless Steel Wire and Wire Rods
A 582 Type 303 SAE USA
Standard Specification for Free-Machining Stainless Steel Bars
A 895 Type 303 SAE USA
Free-Machining Stainless Steel Plate, Sheet, and Strip
A 959 Type 303 SAE USA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
A 314 S30300 SAE USA
Stainless Steel Billets and Bars for Forging
A 473 S30300 SAE USA
Stainless Steel Forgings
A 581 S30300 SAE USA
Free-Machining Stainless Steel Wire and Wire Rods
A 582 S30300 SAE USA
Standard Specification for Free-Machining Stainless Steel Bars
A 895 S30300 SAE USA
Standard Specification for Free-Machining Stainless Steel Bars
F 837 Class A1-50 S30300 SAE USA
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F 837 Class A1-55 S30300 SAE USA
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F 837 Class A1-70 S30300 SAE USA
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F738 Class A1-50 S30300 SAE USA
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F738 Class A1-70 S30300 SAE USA
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F738 Class A1-80 S30300 SAE USA
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs

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