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Product

U.S. Navy MIL-C-915/21 underwater wet welding & cutting cableMIL-C-915/21F / AWS D3.6M600 V (150–400 A DC)Class M Rope-Lay Cu

MIL-C-915/21 (A-A-59609) & #1WC 600 V Underwater Wet Welding CableMIL-C-915/21F · 600 V · U.s. navy mil-c-915/21 underwater wet welding & cutting cable

U.S. Navy MIL-C-915/21 (CID A-A-59609 Type TRXF) & BR-22 / BR-20 Underwater Wet Welding and Ultrathermic Cutting Extra-Flexible Electrode Cable (MIL-C-915/21F, 600 V, -40 °C to +90 °C, min. bend radius 6 × OD).

Water-resistant

Oil-resistant

Flame-retardant

Approved

Configuration

Order designation: MIL-C-915 Config A (Compact)
Outer Ø ≈: 10.4 mm
Net weight ≈: 155 kg/km
Tensile rating ≈: 4.5 kN
Core / stranding: Stranded tinned Cu (IEC 60228 / ASTM)

All sizes (3)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 600 V
Operating temp.: −40…+90 °C
Min. bend radius: 6 × OD
Core / conductor: #1 / 1/0
Outer protection: Integral EPR/PCP
Standard: MIL-C-915/21F

Typical values for this cable type, based on MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding — confirmed in the datasheet and quotation for your order.

Application fit

Is MIL-C-915/21 (A-A-59609) & #1WC right for your machine?

Immersion & wet locations

Suitable

Longitudinally and radially water-blocked construction resists hydrostatic pressure and marine immersion.

Offshore platform & shipboard deck trays

Suitable

Marine-grade jacket resists oil, seawater, UV weathering and mechanical impact on vessels and offshore structures.

Fixed installation

Suitable

Approved for fixed shipboard, submarine outboard, nuclear pool and seabed feeder routing.

Motor stator, traction & converter leads

Suitable

Flexible stranded copper conductors terminate cleanly into submersible pumps, anodes, thrusters and switchgear.

Festoon & line chain

Not suitable

Outboard marine and feeder construction is not designed for high-speed crane festoon trolleys.

Use (N)3GRDC5G-J/O Festoon Cable

Typical machinesMarine & Offshore CableNaval Shipboard & Submarine OutboardOffshore Cathodic Protection (ICCP)Underwater Welding & Nuclear PoolsDeep-Well & Seabed Pump Feeders

Construction

Layer by layer

Shown: MIL-C-915/21 (A-A-59609) & #1WC (MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding) featuring astm b172 class m rope-lay conductor, flex-slippage separator tape and watertight integral epr / polychloroprene jacket (3-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	ASTM B172 Class M Rope-Lay Conductor	2,107 strands (#1 AWG), 2,646 strands (1/0) or 3,325 strands (2/0) of #34 bare copper
2	Flex-Slippage Separator Tape	Non-sticking separator wrap preventing rubber penetration during vulcanization
3	Watertight Integral EPR / Polychloroprene Jacket	≥0.047" (1.19 mm) heavy-duty black vulcanized rubber (600 V, 150–400 A DC subsea)

MIL-C-915/21 (A-A-59609) & #1WC — Standard Subsea & Marine Execution

Built to MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding with astm b172 class m rope-lay conductor and watertight integral epr / polychloroprene jacket

MIL-C-915/21 (A-A-59609) & #1WC — Custom Drum Length & Termination Kit

Available in custom continuous subsea/wellbore drum lengths or pre-terminated assemblies

MIL-C-915/21 (A-A-59609) & #1WC — Routine & Hydrostatic Test Certified

Supplied with EN 10204 3.1 routine dielectric, resistance & pressure/dimensional report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 600 V (MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding)
Core / conductor construction: ASTM B172 Class M Rope-Lay Conductor — 2,107 strands (#1 AWG), 2,646 strands (1/0) or 3,325 strands (2/0) of #34 bare copper
Primary dielectric / buffering: Flex-Slippage Separator Tape — Non-sticking separator wrap preventing rubber penetration during vulcanization

Thermal

Continuous operating temperature: −40…+90 °C (subsea, marine & submersible duty)
Short-circuit / peak thermal rating: Verified thermal stability per MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding
Storage & transport temperature: −40…+80 °C on export wooden/steel drum

Mechanical

Outer protection / armouring: Watertight Integral EPR / Polychloroprene Jacket — ≥0.047" (1.19 mm) heavy-duty black vulcanized rubber (600 V, 150–400 A DC subsea)
Minimum bending radius: 6 × OD
Hydrostatic, tensile & crush duty: Flex-Slippage Separator Tape — Non-sticking separator wrap preventing rubber penetration during vulcanization

Resistance

Hydrostatic pressure & water blocking: Engineered for continuous submersion and hydrostatic integrity per MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding
Seawater, oil & chemical resistance: Resistant to seawater hydrolysis, hydraulic oils and abrasion per MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding
Environmental & test standards: IEC 60228 / IEC 60332 / ISO 13628-5 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: MIL-C-915/21 (A-A-59609) & #1WC
Sheath colour & metre marking: Continuous metre-marked black outer finish (Integral EPR/PCP Rubber)
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard MIL-C-915/21 (A-A-59609) & #1WC subsea & marine configurations

Manufactured to MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding for subsea, offshore, deep-well and marine applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Tensile rating kN ≈	Min. bend R mm
MIL-C-915/21 (A-A-59609) & #1WC Construction Schedule (−40…+90 °C)
MIL-C-915 Config A (Compact)	4×2×24 AWG + 2×18 AWG (or 4C)	Stranded tinned Cu (IEC 60228 / ASTM)	10.4	155	4.5	85
MIL-C-915 Config B (Standard)	4×2×20 AWG + 4×16 AWG (or 8C)	Stranded tinned Cu (IEC 60228 / ASTM)	13.3	265	9.6	110
MIL-C-915 Config C (Heavy Hybrid)	8×2×20 AWG + 4×12 AWG (or 12C)	Stranded tinned Cu (IEC 60228 / ASTM)	16.6	420	18.5	140

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core cross-sections, pair/fibre counts, armour grades and factory drum lengths available per MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
4×2×24 AWG + 2×18 AWG (or 4C)	28.40	600 V (45–100 Ω data)	−40…+90 °C
4×2×20 AWG + 4×16 AWG (or 8C)	10.70	600 V (45–100 Ω data)	−40…+90 °C
8×2×20 AWG + 4×12 AWG (or 12C)	5.40	600 V (High-Power Hybrid)	−40…+90 °C

Every production length undergoes routine conductor DC resistance, high-voltage dielectric or OTDR continuity and dimensional verification.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor resistance, continuity & dimensional verification (MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding)	DC resistance at 20 °C / optical attenuation and outer diameter within MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding)	Zero dielectric breakdown and verified insulation resistance for 600 V rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, water-blocking & mechanical endurance qualification (MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding)	Verified submersion integrity, tensile load and thermal stability across −40…+90 °C	Type qualification & periodic lot audit

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

MIL-C-915/21F CompliantEN 10204 3.1 Factory Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX MIL-C-915/21 (A-A-59609) & #1WC MIL-C-915/21F 600 V CE

Delivery form: Heavy-duty export fumigated wooden drums or steel subsea reels
Standard lengths: 500 m, 1,000 m or custom continuous subsea/wellbore lengths
MOQ: 100 m (standard configurations) · 500 m (custom builds)
Lead time: 2–5 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFMIL-C-915/21 (A-A-59609) & #1WC 600 V Underwater Wet Welding Cable – technical datasheet3 sizes · construction, technical data, approvals XLSXMIL-C-915/21 (A-A-59609) & #1WC spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-25
Updated: 2026-10-25

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What governing standard and construction define MIL-C-915/21 (A-A-59609) & #1WC (MIL-C-915/21 (A-A-59609) & #1WC 600 V Underwater Wet Welding Cable)?

MIL-C-915/21 (A-A-59609) & #1WC (MIL-C-915/21 (A-A-59609) & #1WC 600 V Underwater Wet Welding Cable) is manufactured in accordance with MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding for 600 V service over -40 °C to +90 °C. Its 3-layer construction comprises astm b172 class m rope-lay conductor, flex-slippage separator tape and watertight integral epr / polychloroprene jacket.

What is the minimum bending radius and operating temperature range for MIL-C-915/21 (A-A-59609) & #1WC?

The minimum bending radius for MIL-C-915/21 (A-A-59609) & #1WC is 6 × OD across its continuous operating temperature range of -40 °C to +90 °C, ensuring mechanical and dielectric reliability in subsea, marine and submersible service.

How are the concentric layers of MIL-C-915/21 (A-A-59609) & #1WC arranged from inside to outside?

From inside to outside, the construction sequence is: (01) ASTM B172 Class M Rope-Lay Conductor — 2,107 strands (#1 AWG), 2,646 strands (1/0) or 3,325 strands (2/0) of #34 bare copper; (02) Flex-Slippage Separator Tape — Non-sticking separator wrap preventing rubber penetration during vulcanization; (03) Watertight Integral EPR / Polychloroprene Jacket — ≥0.047" (1.19 mm) heavy-duty black vulcanized rubber (600 V, 150–400 A DC subsea).

What factory test certificates are supplied with MIL-C-915/21 (A-A-59609) & #1WC?

Every production drum of MIL-C-915/21 (A-A-59609) & #1WC undergoes routine conductor resistance/continuity, high-voltage dielectric and dimensional testing per MIL-C-915/21F / CID A-A-59609 / AWS D3.6M Underwater Welding, and is delivered with an EN 10204 3.1 factory test certificate.

Request a quote

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Your selection and application details are copied into the enquiry form below.

01Selected sizes

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02Reel & motion

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03Message for our engineers

MIL-C-915/21 (A-A-59609) & #1WC 600 V Underwater Wet Welding Cable

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Reel & motion:
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