testing


PHYSICAL PROPERTIES
Grade TP Tensile Strength ksi  
(M pa)
 Yield Strength ksi 
(M pa)
Elongation in 2 inches % min Max. Hardness Thermal conductivity cal/sec. cm.oc at temp.Range Co-efficient of expansion x 10 cm/cm./oc at Temp. range 
20-870 oc
Erinnel Roclwel 
O B
304 75 (515) 30 (205) 35 200 90 0.051 19.8
304L 70 (485) 25 (170) 35 200 90 0.051 19.8
310 75 (515) 30 (205) 35 200 9- 0.044 18.8
316 75 (515) 30 (205) 35 200 90 0.042 19.3
316L 70 (485) 25 (170) 35 200 90 0.042 19.3
316Ti 70 (540) 30 (205) 35 200 90 0.042 19.3
321 75 (515) 30 (205) 35 200 90 0.051 19.8
317L 75 (515) 30 (205) 35 200 90 0.049 17.5
CHEMICAL COMPOSITION
Percentage stainless steel designation C
Max
Si
Max
Mn
Max
Cr. Ni P
Max
S
Max
Other 
Elements
SS 301 0.15 1.00 2.00 16.00/18.00 6.00/8.00 0.45 0.030 -----
SS 304 0.08 0.75 2.00 18.00/20.00 8.00/10.50 0.45 0.030 -----
SS 304L 0.03 0.75 2.00 18.00/20.00 8.00/12.00 0.45 0.030 -----
SS 310S 0.08 1.50 2.00 24.00/26.00 19.00/22.00 0.45 0.030 -----
SS 310 0.08 0.75 2.00 16.00/18.00 10.00/14.00 0.45 0.030 Mo2.00/3.00
SS 316L 0.08 0.75 2.00 16.00/18.00 1.00/12.00 0.45 0.030 Mo2.00/3.00
SS 321 0.03 0.75 2.00 17.00/19.00 9.00/12.00 0.45 0.030 Ti+5×(C+N) Min Max=0.70
SS 409 0.08 1.00 1.00 10.50/11.75 0.50 MAx 0.45 0.030 Ti 6×%C Min 0.75Max
SS 409M 0.028 0.40/0.75 0.8/1.2 11.00/12.00 0.40/0.75 0.30 0.030 Tio.25/0.75
SS430 0.12 1.00 1.00 16.00/18.00 0.75 Max 0.45 0.030 -----
SS 430Ti 0.12 1.00 1.00 16.00/18.00 0.75 Max 0.45 0.030 Ti0.030/0.75
SS 410S 0.08 1.00 1.00 11.50/13.50 ----- 0.45 0.030 -----
SS 420 >0.15 1.00 1.00 12.00/14.00 ----- 0.45 0.030 -----
CHEMICAL COMPOSITION

This test is conducted only when specifically requested

Bending Test

Each length of finished pipe is subjected to hydrostatic or pneumatic pressure test. Each pipe must withstand the pressure without leakage.

Flattening Test

This test is conducted to check the strength of the welded section by subjecting, it to extreme compression stress. If the test piece withstands the specified compression stress without cracking, it is determined to be acceptable.

Flange Test

This photo shows a test piece subjected to the flange test. There are no cracks on the welded section or on the base metal.

Hydrostatic/Pneumatic Pressure Test

As per ASTM-A450 & 530 standards, 100% Hydrostatic is carried out on all pipes & tubes using Hydraulic & Pneumatic systems.

Hardness Test

The test piece is subjected to hardness test. The results are noted and verified whether it adheres to the specifications.

Reverse Flattening Test

This photo shows an expanded view of a pipe interior. there are no cracks or blow holes can be observed on the welded section.

Radiography Test

On demand we can also provide the Radiography testing through the approved inspection Agencies.

Eddy Current Test

This test is carried out on the entire length of tubes as per ASTM E-426 to determine the sub-surface in homogeneities. The test is carried out on demand only.

Flaring Test

The standard procedure for this test is to flare the end of the pipe to a diameter 1.2 times the outside diameter. As shown in the photo on the left, no cracks are to be found at flared parts.

Quality Assurance Tests
Flange test
Flaring test
Reverse flattening test
Flattening test
Total immersion test