CHEMICAL COMPOSITIONS


Grade Material
Similar to..
C
Max
Mn
Max
P
Max
S
Max
Si
Max
Cr Ni Mo
A2 / B8 AISI 304 0.08 2.00 0.05 0.030 1.00 17.00-20.00 8.0-13.0 ---
A4 / B8M AISI 316 0.08 2.00 0.05 0.030 1.00 16.00-18.50 10.0-14.4 2.00-3.00

PHYSICAL PROPERTIES


Grade Standard Property Class Tensile Strength
Min.
(N/mm2)
Yield Strength
0.2% Offset
Min.
(N/mm2)
Elongation
After Fracture
AL mm
Min.
A2 & A4 ISO 3506 70 700 450 0.4d
80 800 600 0.3d
Grade Standard Property
 Class
Diameter
 In. (Inch)
Tensile Strength
 Min.(KSI)
Yield Strength
 0.2% Offset
 Min. (KSI)
Elongation
 In 4D min.
 %
Reduction
 Of Area Min
 %
Hardness
 (Max.)
 Rockwell
B8 ASTM
A193
/A193M
Class1 All 75 30 30 50 B96
Class2 To 3/4 125 100 12 35 C35
Over 3/4 to 1 115 80 15 35 C35
B8M Class1 All 75 30 30 50 B96
Class2 To ¾ 110 96 15 45 C35
Over 3/4 to 1 100 80 20 45 C35

TORSIONAL STRENGTH AS PER ISO 3506

FOR SELF TAPPING SCREW


Thread ST 2.2 ST 2.6 ST 2.9 ST 3.3 ST 3.5 ST 3.9 ST 4.2 ST 4.8 ST 5.5 ST 6.3 ST 8
Min Torsional
Strength Nm
0.45 0.9 1.5 2 2.7 3.4 4.4 6.3 10 13.6 30.5

For Austenitic Bolts and Screws M1.6 to M16 (Coarse Thread)


Thread M1.6 M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M16
Min.
Breaking Torque,
Mbmin. --Nm
Property
Class
70 0.20 0.4 0.9 1.6 3.8 7.8 13 32 65 110 290
80 0.24 0.48 0.96 1.8 4.3 8.8 15 37 74 130 330

Note :-

  • Special Stainless Steel Grade available on request
  • We can develop product as per customer's specification/drawing
  • All austenitic stainless steel fasteners are normally non-magnetic; after cold working, some magnetic properties may be evident Please ref: ISO 3506-1 standard