ForMatter/Materials/textile/Cordura® Classic 500D Nylon
mat_cordura_500d_nylon

Cordura® Classic 500D Nylon

synthetic woven, high-tenacity nylon 6,6, polyurethane-coated · Cordura 500D, 500-denier Cordura, 500D ballistic-style nylon, Cordura nylon 6,6, Invista Cordura

The workhorse backpack fabric. Heavy-duty nylon 6,6 yarn (500 denier — heavier than apparel nylon, lighter than the truly armored 1050D ballistic) woven dense and PU-coated on the back for water-resistance and shape. The fabric every Patagonia, Mystery Ranch, Tom Bihn, and JanSport pack body has been built from for forty years. Designers reach for Cordura when they need the bag to outlive the trip. The tradename is owned by Invista (formerly DuPont's Textiles & Interiors) and the trademarked grades all guarantee a minimum performance against abrasion, tear, and tensile loads — Cordura sets the floor for what 'tough' means in soft goods.

Plain-weave or basket-weave high-tenacity nylon 6,6 yarn at 500 denier (~555 dtex), thread count 35×30 ends/picks per inch typical, with a 2-pass polyurethane back-coating. Fabric weight 7–8 oz/yd² (240–270 g/m²). Wyzenbeek abrasion 30,000+ double-rubs (vs. ~3000 for standard 500D polyester). Tear strength 90–130 N. Tensile strength 1500–2200 N. Hydrostatic head 800–1500 mm (water-resistant, not waterproof). Available DWR-finished (durable water repellent) for splash resistance. Color-fastness to UV is good but not best-in-class — 1000+ hours UV before noticeable fade. Hot-cuts to seal edge against fraying; sews readily with #18 or #21 needle and Tex 70+ thread; bartacks at all stress points. Recycled-content variants (Cordura with up to 100 percent post-consumer-recycled nylon) increasingly available since 2018.

mechanical

  • weight_g_m2255
  • tensile_strength_n1800
  • tear_strength_n110
  • abrasion_wyzenbeek_double_rubs30000
source: Invista Cordura technical data sheets; Ripstop By The Roll product listings for Cordura Classic 500D

Sustainability

  • embodied carbon kg co2e per kg8.5
  • sourceEditorial estimate from ICE / Granta CES EduPack class databases — industry mean, with cradle-to-gate boundary unless otherwise noted. Recycled-content Cordura (Eco-Made grades) shifts this number significantly downward; the per-kg load for virgin nylon 6,6 is dominated by caprolactam synthesis upstream.
  • recyclabilitylow to moderate — pure nylon 6,6 can be chemically recycled (Aquafil ECONYL precedent); the PU coating complicates recovery for coated grades
  • biodegradableFalse
  • certificationsbluesign-approved (all Cordura grades since 2020), Cordura EcoMade (recycled-content sub-brand), OEKO-TEX
  • localityyarn produced under license in Asia, Europe, and Americas; finishing in US, Korea, Taiwan, Italy; vendor distribution via RBTR, Rocky Woods, Seattle Fabrics
visual
deep solid color from yarn-dye; subtle weave texture readable at 6 inches; PU coat visible as a slight sheen on the back; fades slowly under sun rather than quickly like polyester
tactile
stiff and substantial; the fabric holds its shape away from a straight edge; hand softens slightly with use but never goes limp; PU coat is slick on the back
weight perception
moderate to heavy — a yard reads as a serious piece of fabric
acoustic
a low rustle, not a paper-light rustle; the fabric sound that backpacks make

PBR starter values

finish · fibrous — open for table, JSON, host snippets, downloads

Principled BSDF defaults derived from the sphere fibrous finish. Reasonable seed for Blender, Substance, Keyshot, Rhino — tune per material. Or grab the whole library at once: ForMaterials library →

# finish:                   fibrous
albedo                      #3a3530
metallic                    0.00
roughness                   0.70
ior                         1.45
transmission                0.00
clearcoat                   0.00
sheen                       0.70
anisotropic                 0.50
copy as JSON
{
  "albedo": "#3a3530",
  "metallic": 0.0,
  "roughness": 0.7,
  "ior": 1.45,
  "transmission": 0.0,
  "clearcoat": 0.0,
  "sheen": 0.7,
  "anisotropic": 0.5
}
Blender 4.x Python
# Blender 4.x — Principled BSDF
# Cordura® Classic 500D Nylon · finish: fibrous
import bpy
mat = bpy.data.materials.new(name="mat_cordura_500d_nylon")
mat.use_nodes = True
bsdf = mat.node_tree.nodes["Principled BSDF"]
bsdf.inputs["Base Color"].default_value         = (0.0423, 0.0356, 0.0296, 1.0)
bsdf.inputs["Metallic"].default_value           = 0.000
bsdf.inputs["Roughness"].default_value          = 0.700
bsdf.inputs["IOR"].default_value                = 1.450
bsdf.inputs["Transmission Weight"].default_value = 0.000
bsdf.inputs["Coat Weight"].default_value        = 0.000
bsdf.inputs["Sheen Weight"].default_value       = 0.700
bsdf.inputs["Anisotropic"].default_value        = 0.500
KeyShot Python (lux)
# KeyShot 11+ — lux Python API, Generic material
# Cordura® Classic 500D Nylon · finish: fibrous
# Run from Window → Scripting Console
import lux
mat = lux.createMaterial(name="mat_cordura_500d_nylon", materialType="Generic")
mat.setProperty("diffuse",      (58, 53, 48))   # 8-bit sRGB
mat.setProperty("metallic",     0.000)
mat.setProperty("roughness",    0.700)
mat.setProperty("indexOfRefraction", 1.450)
mat.setProperty("transparency", 0.000)
mat.setProperty("coatingWeight", 0.000)
Substance pbrMetalRough
{
  "_format": "Substance Designer / Painter \u2014 pbrMetalRough constants",
  "_about": "Cordura\u00ae Classic 500D Nylon \u00b7 finish: fibrous",
  "baseColor": {
    "r": 0.0423,
    "g": 0.0356,
    "b": 0.0296
  },
  "metallic": 0.0,
  "roughness": 0.7,
  "ior": 1.45,
  "opacity": 1.0,
  "anisotropyLevel": 0.5,
  "_notes": "Channels listed are the standard Substance pbrMetalRough output. Drop into a Uniform Color node per channel, or as the constant input on a layered stack."
}
glTF 2.0 Metallic-Roughness
{
  "asset": {
    "version": "2.0",
    "generator": "ForMatter"
  },
  "materials": [
    {
      "name": "mat_cordura_500d_nylon",
      "pbrMetallicRoughness": {
        "baseColorFactor": [
          0.0423,
          0.0356,
          0.0296,
          1.0
        ],
        "metallicFactor": 0.0,
        "roughnessFactor": 0.7
      },
      "extensions": {
        "KHR_materials_ior": {
          "ior": 1.45
        },
        "KHR_materials_sheen": {
          "sheenColorFactor": [
            1.0,
            1.0,
            1.0
          ],
          "sheenRoughnessFactor": 0.7
        }
      }
    }
  ]
}
USD Preview Surface
# USD Preview Surface — UsdShade.MaterialLook prim attributes
# Cordura® Classic 500D Nylon · finish: fibrous
def Material "mat_cordura_500d_nylon" {
    token outputs:surface.connect = </mat_cordura_500d_nylon/PreviewSurface.outputs:surface>

    def Shader "PreviewSurface" {
        uniform token info:id = "UsdPreviewSurface"
        color3f inputs:diffuseColor = (0.0423, 0.0356, 0.0296)
        float   inputs:metallic     = 0.000
        float   inputs:roughness    = 0.700
        float   inputs:ior          = 1.450
        float   inputs:opacity      = 1.000
        float   inputs:clearcoat    = 0.000
        token   outputs:surface
    }
}
↓ download glTF material
Finishes that suit this material

Second life

repairabilitymoderate — Cordura accepts patch repairs (Tenacious Tape, Gear Aid Aquaseal); seam re-stitching is routine for backpack-repair shops (Rainy Pass Repair, Boulder Mountain Repair).
recyclabilitylow — nylon recycling exists (Aquafil ECONYL) but mostly for fishing-net feedstock; cured Cordura with PU coating is hard to re-process.
disposal pathresale → general waste in most jurisdictions; specialty programs at Patagonia, Cotopaxi.
typical longevity15 years (typical)
failure modes
  • UV embrittlement of nylon over 5–10 years sun exposure
  • PU-coating delamination (the canonical failure for waterproof Cordura)
  • abrasion of high-wear zones

INVISTA Cordura technical literature; Aquafil ECONYL recycling program documentation.