Remark: add one more Impact test specimen in the relevant issue, for both FDPT and production

# QCP 5987 Rev. 2 - Test requirements

## Heat treatment

Already filled in in GitLab

## Chemical composition

Already filled in in GitLab

## Tensile test
### Longitudinal
#### Test conditions

- orientation: longitudinal
- specimen type: round
- diameter: 12.7 mm
- sampling zone: base

#### Test requirements

##### PO Item 1
- Yield strength: 450-570 MPa (included) - Range for all pipes shall be 100 MPa maximum
- Tensile strength: 535-655 MPa (included) - Range for all pipes shall be 100 MPa maximum
- Elongation >= 18%
- Yield / Tensile ratio <= 0.87 (for at least 80% of pipes), the remaining pipes may have Ys/Ts <= 0.89

##### PO Item 2
- Yield strength: 450-570 MPa (included) - Range for all pipes shall be 100 MPa maximum
- Tensile strength: 535-760 MPa (included)
- Elongation >= 20%
- Yield / Tensile ratio <= 0.89

### Transversal
#### Test conditions

- orientation: transversal
- specimen type: round
- diameter: 12.7 mm
- sampling zone: base

#### Test requirements

As for longitudinal

## Impact test
### Longitudinal
#### Test conditions
- location: base
- position:
- 1 specimen 1/2 thickness
- 1 specimen 2 mm from OD
- orientation: longitudinal
- specimen height: 10 mm
- Test temperature: -29 °C

#### Test requirements

- Absorbed energy
- Individual >= 80 J
- Average >= 120 J
- Shear area
- Individual >= 60%
- Average >= 60%
- The average of all pipes shall be >= 85%
- Lateral expansion: no requirement, but it is a mandatory input

### Transversal
#### Test conditions

- location: base
- position:
- 1 specimen 1/2 thickness
- 1 specimen 2 mm from OD
- orientation: transversal
- specimen height: 10 mm
- Test temperature: -29 °C

#### Test requirements

As for longitudinal

## Impact test transition curve
- Test temperatures: 0 °C; -10 °C; -20 °C; -29 °C; -40 °C; -50 °C; -60 °C°
- Orientation: transversal
- location: base
- specimen height: 10 mm
- position: 1/2 thickness
- also shear area and lateral expansion are mandatory to be filled in (no chart neede, that is only for absorbed energy as we already have)

## Hardness test

circular sample with 4 quadrants and 48 hardness points as usual for Tenaris

### PO Item 1

- 235 HV10 maximum individual
- 230 HV10 max average per quadrant

### PO Item 2

- 245 HV10 maximum individual
- no requirement on average

## CTOD
### Test temperature -3 °C
- test temperature: -3 °C
- three specimens required
- single specimen >= 0.38 mm
- average of three specimens >= 0.50 mm

### Test temperature -12 °C
- test temperature: -12 °C
- three specimens required
- single specimen: CTOD value to be reported, but no acceptance criteria
- average of three specimens: no acceptance criteria

## HIC
- test duration: 96 h
- three specimens required
- no requirements on individual specimen
- average of three specimens
- CSR <= 2 %
- CLR <=15 %
- CTR <= 5 %

## SSCC
- test duration: 720 h
- Yield strength type: Actual
- Yield strength percentage: 80%
- Magnification: 10
- Acceptance criteria: no cracks

## Hydrostatic test
- PO Item 1: 19458 psi
- PO Item 2: 20000 psi
- Holding time: 10 s

## EMI

We can have the following as declaration

EMI equipment calibrated using N5 notches for longitudinal / transverse external defects. The References standard for calibration contains Notches on OD Longitudinal & Transverse.
- Notch Depth: 5% WT nom ( minimum 0.3 mm)
- Length <= 50 mm
- Width <= 1.0 mm

## Ultrasonic examination

We can have the following as declaration:

Full length inspection for Longitudinal / Transverse (L/T) and External / Internal defects (OD/ID). Inspection performed also for control of laminations.
Notches on OD & ID; Longitudinal & Transverse.
- Notch Depth: 5% WT nom
- Notch Length: <= 25.4 mm
- Notch Width: <= 1.0 mm
- Radially Drilled Hole for detection: 4.8mm for item 1 & 6.4 mm for item 2
- For laminations, internal longitudinal groove 17 x 6 mm (depth 20-50% WT)

## Magnetic particle

We can have the following as declaration:

Both ends of each pipe examined by wet fluorescent particle method, with black light viewing for a distance of at least 250 mm from each end. Coverage include both axial and circumferential magnetization of the ID, OD, and end surfaces in the inspected length.

## Dimensional control

### Nominal dimension
#### PO Item 1
- Outside diameter: 273.1 mm
- Thickness: 45.21 mm
- Inside diameter: 182.68 mm

#### PO Item 2
- Outside diameter: 273.1 mm
- Thickness: 47.93 mm
- Inside diameter: 177.24 mm

### Outside diameter (pipe body)
- OD: +/-0.75% of nominal OD
- OD Out of Roundness: max 1.5% of nominal OD

### Inside diameter (pipe ends)

- ID: +/- 3.75 mm, applied to Actual ID
- ID Out of Roundness: max 6.5 mm

Actual ID is determined after measuring the first pipes. This
becomes the target ID for the order and will remain the same for
the whole manufacturing of the item

Dimensional report shall include ID min; ID max, ID OoR per
both ends A and B.

### Wall thickness (ends)

- PO Item 1: -5%/+15% Nominal wall thickness
- PO Item 2: -0%/+20% Nominal wall thickness

Dimensional report shall include WT min and WT max at each end (A and B)

### Eccentricity (ends)

Max 18% of the input of wall thickness

### Straightness

- on pipe length <= 0.15% over
- on pipe ends <= 3.2 mm

### Squareness (ends)

squareness <= 1.6 mm

### Length

- PO Item 1: 11.6 - 11.8 m (included)
- PO Item 2: 10.5 - 11.3 m (included)

### Weight

- PO Item 1: -3.5%/+ 10% Nominal Weight (but we don't have it)
- PO Item 2: -3.5% + 15% Nominal Weight (but we don't have it)

## Visual examination

We can have the following as declaration

Visual inspection conducted under at least 300 lux illumination. Pipe surface free from grease, loose mill scales, lacquer,
antifreeze (from UT compliant) and other contaminants such as
chlorides, that could interfere with coating applications.

## Residual magnetism

We can have the following as declaration

Magnetic flux density less than 15 Gauss average with single value less than 20 Gauss