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

# QCP 5983 Rev. 5 - Test requirements

## Heat treatment

- Method: inlide
- Type: quench and temper
- Quench: 870 - 960 °C, cool in water
- Temper: 580 - 720 °C, cool in still air

## Chemical composition

- C: 0.07 - 0.12 (included)
- Si <= 0.45
- Mn <= 1.65
- P <= 0.020
- S <= 0.003
- Cr <= 0.30
- Mo <= 0.20
- Ni <= 0.30
- Cu <= 0.35
- V <= 0.080
- Nb <= 0.040
- Ti <= 0.020
- Al <= 0.060
- Ce (PCM) <= 0.22
- Ce (IIW) no acceptance criteria, but shall be calculated and shown by us
- N <= 0.012
- B <= 0.0005
- Nb+V+Ti <= 0.12
- Al/N >= 2

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

- orientation: longitudinal
- diameter: 12.7 mm
- sampling zone: base

#### Test requirements

##### PO Items 1-3
- 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
- If round specimen >= 18%
- If strip specimen >= 25%
- Yield / Tensile ratio <= 0.89

##### PO Items 2-4
- Yield strength: 450-570 MPa (included)
- Tensile strength: 535-760 MPa (included)
- Elongation
- If round specimen >= 18%
- If strip specimen >= 25%
- Yield / Tensile ratio <= 0.89

### Transversal
#### Test conditions

- orientation: transversal
- 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:
- PO Item 1-2: -7 °C
- PO Item 3-4: -29 °C

#### Test requirements

- Absorbed energy
- Individual >= 60 J
- Average >= 70 J
- Shear area
- Individual >= 60%
- Average >= 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:
- PO Item 1-2: -7 °C
- PO Item 3-4: -29 °C

#### Test requirements

As for longitudinal

## Impact test transition curve
- Test temperature:
- PO Items 1-2: 0 °C; -7 °C; -20 °C; -30 °C; -40 °C; -50 °C; -60 °C
- PO Items 3-4: 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

### All items

- 250 HV10 maximum individual
- no requirement on average

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

## Hydrostatic test
- PO Item 1: 5802 psi
- PO Item 2: 5802 psi
- PO Item 3: 6527 psi
- PO Item 4: 6527 ps
- 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:

Pipe ends dry MPI inspected as per ISO 10893-5

## Dimensional control

### Nominal dimension
#### PO Item 1
- Outside diameter: 508 mm
- Thickness: 30.48 mm
- Inside diameter: 447.04 mm

#### PO Item 2
- Outside diameter: 508 mm
- Thickness: 33.10 mm
- Inside diameter: 441.8 mm

#### PO Item 3
- Outside diameter: 457.2 mm
- Thickness: 30.48 mm
- Inside diameter: 396.24 mm

#### PO Item 4
- Outside diameter: 457.2 mm
- Thickness: 33.10 mm
- Inside diameter: 391.0 mm

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

### Outside diameter (pipe ends) - only items 2-4
- OD: +/-0.75% of nominal OD
- OD Out of Roundness: max 1.5% of nominal OD

### Inside diameter (pipe ends) - only items 1-3

- PO Item 1
- ID: +/- 3.5 mm, applied to Actual ID
- ID Out of Roundness: max 6.5 mm
- PO Item 3
- ID: +/- 1.6 mm, applied to Actual ID
- ID Out of Roundness: max 2.4 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: -/+10% Nominal wall thickness
- PO Item 2: -/+10% Nominal wall thickness
- PO Item 3: -/+11.5% Nominal wall thickness
- PO Item 4: -10%/+11.5% 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:
- single pipe: 10.2 - 11.2 m (included)
- average of all pipes shall be >= 10.9 m
- PO Item 2: 9.0 - 11.2 m (included)
- PO Item 3: 11.6 - 11.8 m (included)
- PO Item 4: 9.0 - 11.6 m (included)

### Weight

- All items -3.5%/+ 10% 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